Home / 42,489.54-63,734.28-20,235.43

Finding the Fourth Proportional to 42,489.54, 63,734.28 and 20,235.43

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Solution

The fourth proportional to 42,489.54, 63,734.28 and 20,235.43 is: 30,353.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,489.54 : 63,734.28 = 20,235.43 : x
  2. Step 2: Convert to fraction form
    42,489.54/63,734.28 = 20,235.43/x
  3. Step 3: Cross multiply
    42,489.54x = 63,734.28 × 20,235.43
  4. Step 4: Simplify right side
    42,489.54x = 1,289,690,561.54
  5. Step 5: Solve for x
    x = 1,289,690,561.54/42,489.54
  6. Step 6: Final answer
    x = 30,353.13

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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.