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Finding the Fourth Proportional to 10,908.64, 15,040.64 and 9,227.04

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Solution

The fourth proportional to 10,908.64, 15,040.64 and 9,227.04 is: 12,722.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908.64 : 15,040.64 = 9,227.04 : x
  2. Step 2: Convert to fraction form
    10,908.64/15,040.64 = 9,227.04/x
  3. Step 3: Cross multiply
    10,908.64x = 15,040.64 × 9,227.04
  4. Step 4: Simplify right side
    10,908.64x = 138,780,586.91
  5. Step 5: Solve for x
    x = 138,780,586.91/10,908.64
  6. Step 6: Final answer
    x = 12,722.08

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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.