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Finding the Fourth Proportional to 26,672.80, 40,017.30 and 14,978.20

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Solution

The fourth proportional to 26,672.80, 40,017.30 and 14,978.20 is: 22,471.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,672.80 : 40,017.30 = 14,978.20 : x
  2. Step 2: Convert to fraction form
    26,672.80/40,017.30 = 14,978.20/x
  3. Step 3: Cross multiply
    26,672.80x = 40,017.30 × 14,978.20
  4. Step 4: Simplify right side
    26,672.80x = 599,387,122.86
  5. Step 5: Solve for x
    x = 599,387,122.86/26,672.80
  6. Step 6: Final answer
    x = 22,471.85

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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.