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Finding the Fourth Proportional to 18,387.50, 27,577.93 and 7,863.44

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Solution

The fourth proportional to 18,387.50, 27,577.93 and 7,863.44 is: 11,793.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.50 : 27,577.93 = 7,863.44 : x
  2. Step 2: Convert to fraction form
    18,387.50/27,577.93 = 7,863.44/x
  3. Step 3: Cross multiply
    18,387.50x = 27,577.93 × 7,863.44
  4. Step 4: Simplify right side
    18,387.50x = 216,857,259.99
  5. Step 5: Solve for x
    x = 216,857,259.99/18,387.50
  6. Step 6: Final answer
    x = 11,793.74

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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.