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Finding the Fourth Proportional to 15,126.63, 20,876.92 and 9,077.14

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Solution

The fourth proportional to 15,126.63, 20,876.92 and 9,077.14 is: 12,527.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.63 : 20,876.92 = 9,077.14 : x
  2. Step 2: Convert to fraction form
    15,126.63/20,876.92 = 9,077.14/x
  3. Step 3: Cross multiply
    15,126.63x = 20,876.92 × 9,077.14
  4. Step 4: Simplify right side
    15,126.63x = 189,502,725.61
  5. Step 5: Solve for x
    x = 189,502,725.61/15,126.63
  6. Step 6: Final answer
    x = 12,527.76

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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.