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Finding the Fourth Proportional to 18,402.60, 27,601.08 and 6,715.84

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Solution

The fourth proportional to 18,402.60, 27,601.08 and 6,715.84 is: 10,072.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,402.60 : 27,601.08 = 6,715.84 : x
  2. Step 2: Convert to fraction form
    18,402.60/27,601.08 = 6,715.84/x
  3. Step 3: Cross multiply
    18,402.60x = 27,601.08 × 6,715.84
  4. Step 4: Simplify right side
    18,402.60x = 185,364,437.11
  5. Step 5: Solve for x
    x = 185,364,437.11/18,402.60
  6. Step 6: Final answer
    x = 10,072.73

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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.