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Finding the Fourth Proportional to 9,042.28, 13,581.24 and 8,653.48

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Solution

The fourth proportional to 9,042.28, 13,581.24 and 8,653.48 is: 12,997.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,042.28 : 13,581.24 = 8,653.48 : x
  2. Step 2: Convert to fraction form
    9,042.28/13,581.24 = 8,653.48/x
  3. Step 3: Cross multiply
    9,042.28x = 13,581.24 × 8,653.48
  4. Step 4: Simplify right side
    9,042.28x = 117,524,988.72
  5. Step 5: Solve for x
    x = 117,524,988.72/9,042.28
  6. Step 6: Final answer
    x = 12,997.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.