Home / 38,459.28-57,688.56-20,925.12

Finding the Fourth Proportional to 38,459.28, 57,688.56 and 20,925.12

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Solution

The fourth proportional to 38,459.28, 57,688.56 and 20,925.12 is: 31,387.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,459.28 : 57,688.56 = 20,925.12 : x
  2. Step 2: Convert to fraction form
    38,459.28/57,688.56 = 20,925.12/x
  3. Step 3: Cross multiply
    38,459.28x = 57,688.56 × 20,925.12
  4. Step 4: Simplify right side
    38,459.28x = 1,207,140,040.63
  5. Step 5: Solve for x
    x = 1,207,140,040.63/38,459.28
  6. Step 6: Final answer
    x = 31,387.48

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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.