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Finding the Fourth Proportional to 12,775.28, 17,626.08 and 8,061.08

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Solution

The fourth proportional to 12,775.28, 17,626.08 and 8,061.08 is: 11,121.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.28 : 17,626.08 = 8,061.08 : x
  2. Step 2: Convert to fraction form
    12,775.28/17,626.08 = 8,061.08/x
  3. Step 3: Cross multiply
    12,775.28x = 17,626.08 × 8,061.08
  4. Step 4: Simplify right side
    12,775.28x = 142,085,240.97
  5. Step 5: Solve for x
    x = 142,085,240.97/12,775.28
  6. Step 6: Final answer
    x = 11,121.89

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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.