Home / 21,839.52-32,761.40-8,688.99

Finding the Fourth Proportional to 21,839.52, 32,761.40 and 8,688.99

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Solution

The fourth proportional to 21,839.52, 32,761.40 and 8,688.99 is: 13,034.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,839.52 : 32,761.40 = 8,688.99 : x
  2. Step 2: Convert to fraction form
    21,839.52/32,761.40 = 8,688.99/x
  3. Step 3: Cross multiply
    21,839.52x = 32,761.40 × 8,688.99
  4. Step 4: Simplify right side
    21,839.52x = 284,663,433.54
  5. Step 5: Solve for x
    x = 284,663,433.54/21,839.52
  6. Step 6: Final answer
    x = 13,034.33

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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.