Home / 21,240,143,999.10-31,860,215,998.65-10,220,183,423.10

Finding the Fourth Proportional to 21,240,143,999.10, 31,860,215,998.65 and 10,220,183,423.10

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Solution

The fourth proportional to 21,240,143,999.10, 31,860,215,998.65 and 10,220,183,423.10 is: 15,330,275,134.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,240,143,999.10 : 31,860,215,998.65 = 10,220,183,423.10 : x
  2. Step 2: Convert to fraction form
    21,240,143,999.10/31,860,215,998.65 = 10,220,183,423.10/x
  3. Step 3: Cross multiply
    21,240,143,999.10x = 31,860,215,998.65 × 10,220,183,423.10
  4. Step 4: Simplify right side
    21,240,143,999.10x = 325,617,251,405,788,151,808
  5. Step 5: Solve for x
    x = 325,617,251,405,788,151,808/21,240,143,999.10
  6. Step 6: Final answer
    x = 15,330,275,134.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.