Home / 38,104.10-57,139.60-20,330.79

Finding the Fourth Proportional to 38,104.10, 57,139.60 and 20,330.79

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Solution

The fourth proportional to 38,104.10, 57,139.60 and 20,330.79 is: 30,487.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,104.10 : 57,139.60 = 20,330.79 : x
  2. Step 2: Convert to fraction form
    38,104.10/57,139.60 = 20,330.79/x
  3. Step 3: Cross multiply
    38,104.10x = 57,139.60 × 20,330.79
  4. Step 4: Simplify right side
    38,104.10x = 1,161,693,397.08
  5. Step 5: Solve for x
    x = 1,161,693,397.08/38,104.10
  6. Step 6: Final answer
    x = 30,487.36

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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.