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Finding the Fourth Proportional to 15,371.40, 23,013.90 and 14,939.40

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Solution

The fourth proportional to 15,371.40, 23,013.90 and 14,939.40 is: 22,367.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.40 : 23,013.90 = 14,939.40 : x
  2. Step 2: Convert to fraction form
    15,371.40/23,013.90 = 14,939.40/x
  3. Step 3: Cross multiply
    15,371.40x = 23,013.90 × 14,939.40
  4. Step 4: Simplify right side
    15,371.40x = 343,813,857.66
  5. Step 5: Solve for x
    x = 343,813,857.66/15,371.40
  6. Step 6: Final answer
    x = 22,367.11

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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.