Home / 21,337.83-31,943.58-15,815.97

Finding the Fourth Proportional to 21,337.83, 31,943.58 and 15,815.97

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Solution

The fourth proportional to 21,337.83, 31,943.58 and 15,815.97 is: 23,677.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,337.83 : 31,943.58 = 15,815.97 : x
  2. Step 2: Convert to fraction form
    21,337.83/31,943.58 = 15,815.97/x
  3. Step 3: Cross multiply
    21,337.83x = 31,943.58 × 15,815.97
  4. Step 4: Simplify right side
    21,337.83x = 505,218,702.97
  5. Step 5: Solve for x
    x = 505,218,702.97/21,337.83
  6. Step 6: Final answer
    x = 23,677.14

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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.