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Finding the Fourth Proportional to 38,327.80, 52,891.80 and 21,560.80

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Solution

The fourth proportional to 38,327.80, 52,891.80 and 21,560.80 is: 29,753.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,327.80 : 52,891.80 = 21,560.80 : x
  2. Step 2: Convert to fraction form
    38,327.80/52,891.80 = 21,560.80/x
  3. Step 3: Cross multiply
    38,327.80x = 52,891.80 × 21,560.80
  4. Step 4: Simplify right side
    38,327.80x = 1,140,389,521.44
  5. Step 5: Solve for x
    x = 1,140,389,521.44/38,327.80
  6. Step 6: Final answer
    x = 29,753.59

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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.