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Finding the Fourth Proportional to 18,254.91, 27,385.17 and 7,724.98

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Solution

The fourth proportional to 18,254.91, 27,385.17 and 7,724.98 is: 11,588.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,254.91 : 27,385.17 = 7,724.98 : x
  2. Step 2: Convert to fraction form
    18,254.91/27,385.17 = 7,724.98/x
  3. Step 3: Cross multiply
    18,254.91x = 27,385.17 × 7,724.98
  4. Step 4: Simplify right side
    18,254.91x = 211,549,890.55
  5. Step 5: Solve for x
    x = 211,549,890.55/18,254.91
  6. Step 6: Final answer
    x = 11,588.66

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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.