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Finding the Fourth Proportional to 18,338.31, 27,503.19 and 5,859.45

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Solution

The fourth proportional to 18,338.31, 27,503.19 and 5,859.45 is: 8,787.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,338.31 : 27,503.19 = 5,859.45 : x
  2. Step 2: Convert to fraction form
    18,338.31/27,503.19 = 5,859.45/x
  3. Step 3: Cross multiply
    18,338.31x = 27,503.19 × 5,859.45
  4. Step 4: Simplify right side
    18,338.31x = 161,153,566.65
  5. Step 5: Solve for x
    x = 161,153,566.65/18,338.31
  6. Step 6: Final answer
    x = 8,787.81

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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.