Home / 20,872.52-31,274.14-15,020.36

Finding the Fourth Proportional to 20,872.52, 31,274.14 and 15,020.36

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Solution

The fourth proportional to 20,872.52, 31,274.14 and 15,020.36 is: 22,505.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872.52 : 31,274.14 = 15,020.36 : x
  2. Step 2: Convert to fraction form
    20,872.52/31,274.14 = 15,020.36/x
  3. Step 3: Cross multiply
    20,872.52x = 31,274.14 × 15,020.36
  4. Step 4: Simplify right side
    20,872.52x = 469,748,841.49
  5. Step 5: Solve for x
    x = 469,748,841.49/20,872.52
  6. Step 6: Final answer
    x = 22,505.61

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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.