Home / 20,114,810.30-30,172,215.45-7,987,166.30

Finding the Fourth Proportional to 20,114,810.30, 30,172,215.45 and 7,987,166.30

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Solution

The fourth proportional to 20,114,810.30, 30,172,215.45 and 7,987,166.30 is: 11,980,749.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,114,810.30 : 30,172,215.45 = 7,987,166.30 : x
  2. Step 2: Convert to fraction form
    20,114,810.30/30,172,215.45 = 7,987,166.30/x
  3. Step 3: Cross multiply
    20,114,810.30x = 30,172,215.45 × 7,987,166.30
  4. Step 4: Simplify right side
    20,114,810.30x = 240,990,502,438,579.31
  5. Step 5: Solve for x
    x = 240,990,502,438,579.31/20,114,810.30
  6. Step 6: Final answer
    x = 11,980,749.45

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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.