Home / 13,972.20-19,279.43-8,002.71

Finding the Fourth Proportional to 13,972.20, 19,279.43 and 8,002.71

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Solution

The fourth proportional to 13,972.20, 19,279.43 and 8,002.71 is: 11,042.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.20 : 19,279.43 = 8,002.71 : x
  2. Step 2: Convert to fraction form
    13,972.20/19,279.43 = 8,002.71/x
  3. Step 3: Cross multiply
    13,972.20x = 19,279.43 × 8,002.71
  4. Step 4: Simplify right side
    13,972.20x = 154,287,715.62
  5. Step 5: Solve for x
    x = 154,287,715.62/13,972.20
  6. Step 6: Final answer
    x = 11,042.48

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1.5x scale

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.