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Finding the Fourth Proportional to 26,517.28, 39,776.06 and 8,987.28

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Solution

The fourth proportional to 26,517.28, 39,776.06 and 8,987.28 is: 13,480.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,517.28 : 39,776.06 = 8,987.28 : x
  2. Step 2: Convert to fraction form
    26,517.28/39,776.06 = 8,987.28/x
  3. Step 3: Cross multiply
    26,517.28x = 39,776.06 × 8,987.28
  4. Step 4: Simplify right side
    26,517.28x = 357,478,588.52
  5. Step 5: Solve for x
    x = 357,478,588.52/26,517.28
  6. Step 6: Final answer
    x = 13,480.97

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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.