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Finding the Fourth Proportional to 18,605.97, 27,909.17 and 5,458.60

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Solution

The fourth proportional to 18,605.97, 27,909.17 and 5,458.60 is: 8,187.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.97 : 27,909.17 = 5,458.60 : x
  2. Step 2: Convert to fraction form
    18,605.97/27,909.17 = 5,458.60/x
  3. Step 3: Cross multiply
    18,605.97x = 27,909.17 × 5,458.60
  4. Step 4: Simplify right side
    18,605.97x = 152,344,995.36
  5. Step 5: Solve for x
    x = 152,344,995.36/18,605.97
  6. Step 6: Final answer
    x = 8,187.96

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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.