Home / 42,572.46-63,862.02-12,990.55

Finding the Fourth Proportional to 42,572.46, 63,862.02 and 12,990.55

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Solution

The fourth proportional to 42,572.46, 63,862.02 and 12,990.55 is: 19,486.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,572.46 : 63,862.02 = 12,990.55 : x
  2. Step 2: Convert to fraction form
    42,572.46/63,862.02 = 12,990.55/x
  3. Step 3: Cross multiply
    42,572.46x = 63,862.02 × 12,990.55
  4. Step 4: Simplify right side
    42,572.46x = 829,602,763.91
  5. Step 5: Solve for x
    x = 829,602,763.91/42,572.46
  6. Step 6: Final answer
    x = 19,486.84

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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.