Home / 21,255.12-31,897.92-14,248.50

Finding the Fourth Proportional to 21,255.12, 31,897.92 and 14,248.50

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Solution

The fourth proportional to 21,255.12, 31,897.92 and 14,248.50 is: 21,382.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,255.12 : 31,897.92 = 14,248.50 : x
  2. Step 2: Convert to fraction form
    21,255.12/31,897.92 = 14,248.50/x
  3. Step 3: Cross multiply
    21,255.12x = 31,897.92 × 14,248.50
  4. Step 4: Simplify right side
    21,255.12x = 454,497,513.12
  5. Step 5: Solve for x
    x = 454,497,513.12/21,255.12
  6. Step 6: Final answer
    x = 21,382.97

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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.