Home / 42,487.40-63,731.09-20,233.31

Finding the Fourth Proportional to 42,487.40, 63,731.09 and 20,233.31

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Solution

The fourth proportional to 42,487.40, 63,731.09 and 20,233.31 is: 30,349.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,487.40 : 63,731.09 = 20,233.31 : x
  2. Step 2: Convert to fraction form
    42,487.40/63,731.09 = 20,233.31/x
  3. Step 3: Cross multiply
    42,487.40x = 63,731.09 × 20,233.31
  4. Step 4: Simplify right side
    42,487.40x = 1,289,490,480.79
  5. Step 5: Solve for x
    x = 1,289,490,480.79/42,487.40
  6. Step 6: Final answer
    x = 30,349.95

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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.