Home / 21,384-29,522.88-13,944.96

Finding the Fourth Proportional to 21,384, 29,522.88 and 13,944.96

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Solution

The fourth proportional to 21,384, 29,522.88 and 13,944.96 is: 19,252.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384 : 29,522.88 = 13,944.96 : x
  2. Step 2: Convert to fraction form
    21,384/29,522.88 = 13,944.96/x
  3. Step 3: Cross multiply
    21,384x = 29,522.88 × 13,944.96
  4. Step 4: Simplify right side
    21,384x = 411,695,380.68
  5. Step 5: Solve for x
    x = 411,695,380.68/21,384
  6. Step 6: Final answer
    x = 19,252.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.