Home / 42,318.88-63,432.68-18,605.36

Finding the Fourth Proportional to 42,318.88, 63,432.68 and 18,605.36

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Solution

The fourth proportional to 42,318.88, 63,432.68 and 18,605.36 is: 27,887.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,318.88 : 63,432.68 = 18,605.36 : x
  2. Step 2: Convert to fraction form
    42,318.88/63,432.68 = 18,605.36/x
  3. Step 3: Cross multiply
    42,318.88x = 63,432.68 × 18,605.36
  4. Step 4: Simplify right side
    42,318.88x = 1,180,187,847.16
  5. Step 5: Solve for x
    x = 1,180,187,847.16/42,318.88
  6. Step 6: Final answer
    x = 27,887.97

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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.