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Finding the Fourth Proportional to 10,888.20, 15,029.10 and 8,654.04

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Solution

The fourth proportional to 10,888.20, 15,029.10 and 8,654.04 is: 11,945.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,888.20 : 15,029.10 = 8,654.04 : x
  2. Step 2: Convert to fraction form
    10,888.20/15,029.10 = 8,654.04/x
  3. Step 3: Cross multiply
    10,888.20x = 15,029.10 × 8,654.04
  4. Step 4: Simplify right side
    10,888.20x = 130,062,432.56
  5. Step 5: Solve for x
    x = 130,062,432.56/10,888.20
  6. Step 6: Final answer
    x = 11,945.26

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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.