Home / 38,285.38-57,428.07-11,990.26

Finding the Fourth Proportional to 38,285.38, 57,428.07 and 11,990.26

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Solution

The fourth proportional to 38,285.38, 57,428.07 and 11,990.26 is: 17,985.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,285.38 : 57,428.07 = 11,990.26 : x
  2. Step 2: Convert to fraction form
    38,285.38/57,428.07 = 11,990.26/x
  3. Step 3: Cross multiply
    38,285.38x = 57,428.07 × 11,990.26
  4. Step 4: Simplify right side
    38,285.38x = 688,577,490.60
  5. Step 5: Solve for x
    x = 688,577,490.60/38,285.38
  6. Step 6: Final answer
    x = 17,985.39

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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.