Home / 42,387.12-63,511.56-21,582

Finding the Fourth Proportional to 42,387.12, 63,511.56 and 21,582

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Solution

The fourth proportional to 42,387.12, 63,511.56 and 21,582 is: 32,337.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,387.12 : 63,511.56 = 21,582 : x
  2. Step 2: Convert to fraction form
    42,387.12/63,511.56 = 21,582/x
  3. Step 3: Cross multiply
    42,387.12x = 63,511.56 × 21,582
  4. Step 4: Simplify right side
    42,387.12x = 1,370,706,487.92
  5. Step 5: Solve for x
    x = 1,370,706,487.92/42,387.12
  6. Step 6: Final answer
    x = 32,337.81

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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.