Home / 20,852.10-31,278.05-7,001.10

Finding the Fourth Proportional to 20,852.10, 31,278.05 and 7,001.10

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Solution

The fourth proportional to 20,852.10, 31,278.05 and 7,001.10 is: 10,501.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,852.10 : 31,278.05 = 7,001.10 : x
  2. Step 2: Convert to fraction form
    20,852.10/31,278.05 = 7,001.10/x
  3. Step 3: Cross multiply
    20,852.10x = 31,278.05 × 7,001.10
  4. Step 4: Simplify right side
    20,852.10x = 218,980,747.10
  5. Step 5: Solve for x
    x = 218,980,747.10/20,852.10
  6. Step 6: Final answer
    x = 10,501.62

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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.