Home / 18,103.38-27,158.81-8,749.90

Finding the Fourth Proportional to 18,103.38, 27,158.81 and 8,749.90

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Solution

The fourth proportional to 18,103.38, 27,158.81 and 8,749.90 is: 13,126.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,103.38 : 27,158.81 = 8,749.90 : x
  2. Step 2: Convert to fraction form
    18,103.38/27,158.81 = 8,749.90/x
  3. Step 3: Cross multiply
    18,103.38x = 27,158.81 × 8,749.90
  4. Step 4: Simplify right side
    18,103.38x = 237,636,871.62
  5. Step 5: Solve for x
    x = 237,636,871.62/18,103.38
  6. Step 6: Final answer
    x = 13,126.66

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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.