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Finding the Fourth Proportional to 14,260.50, 19,679.92 and 7,972.90

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Solution

The fourth proportional to 14,260.50, 19,679.92 and 7,972.90 is: 11,002.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,260.50 : 19,679.92 = 7,972.90 : x
  2. Step 2: Convert to fraction form
    14,260.50/19,679.92 = 7,972.90/x
  3. Step 3: Cross multiply
    14,260.50x = 19,679.92 × 7,972.90
  4. Step 4: Simplify right side
    14,260.50x = 156,906,034.17
  5. Step 5: Solve for x
    x = 156,906,034.17/14,260.50
  6. Step 6: Final answer
    x = 11,002.84

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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.