Home / 42,147.18-63,220.14-12,565.14

Finding the Fourth Proportional to 42,147.18, 63,220.14 and 12,565.14

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Solution

The fourth proportional to 42,147.18, 63,220.14 and 12,565.14 is: 18,847.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,147.18 : 63,220.14 = 12,565.14 : x
  2. Step 2: Convert to fraction form
    42,147.18/63,220.14 = 12,565.14/x
  3. Step 3: Cross multiply
    42,147.18x = 63,220.14 × 12,565.14
  4. Step 4: Simplify right side
    42,147.18x = 794,369,909.92
  5. Step 5: Solve for x
    x = 794,369,909.92/42,147.18
  6. Step 6: Final answer
    x = 18,847.52

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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.