Home / 18,479.38-27,715.74-5,328.52

Finding the Fourth Proportional to 18,479.38, 27,715.74 and 5,328.52

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Solution

The fourth proportional to 18,479.38, 27,715.74 and 5,328.52 is: 7,991.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,479.38 : 27,715.74 = 5,328.52 : x
  2. Step 2: Convert to fraction form
    18,479.38/27,715.74 = 5,328.52/x
  3. Step 3: Cross multiply
    18,479.38x = 27,715.74 × 5,328.52
  4. Step 4: Simplify right side
    18,479.38x = 147,683,874.90
  5. Step 5: Solve for x
    x = 147,683,874.90/18,479.38
  6. Step 6: Final answer
    x = 7,991.82

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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.