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Finding the Fourth Proportional to 18,286.88, 27,368.88 and 10,484

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Solution

The fourth proportional to 18,286.88, 27,368.88 and 10,484 is: 15,690.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,286.88 : 27,368.88 = 10,484 : x
  2. Step 2: Convert to fraction form
    18,286.88/27,368.88 = 10,484/x
  3. Step 3: Cross multiply
    18,286.88x = 27,368.88 × 10,484
  4. Step 4: Simplify right side
    18,286.88x = 286,935,337.92
  5. Step 5: Solve for x
    x = 286,935,337.92/18,286.88
  6. Step 6: Final answer
    x = 15,690.78

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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.