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Finding the Fourth Proportional to 18,398.86, 27,600.27 and 7,869.97

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Solution

The fourth proportional to 18,398.86, 27,600.27 and 7,869.97 is: 11,805.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.86 : 27,600.27 = 7,869.97 : x
  2. Step 2: Convert to fraction form
    18,398.86/27,600.27 = 7,869.97/x
  3. Step 3: Cross multiply
    18,398.86x = 27,600.27 × 7,869.97
  4. Step 4: Simplify right side
    18,398.86x = 217,213,296.89
  5. Step 5: Solve for x
    x = 217,213,296.89/18,398.86
  6. Step 6: Final answer
    x = 11,805.80

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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.