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Finding the Fourth Proportional to 11,399.90, 17,099.06 and 5,481

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Solution

The fourth proportional to 11,399.90, 17,099.06 and 5,481 is: 8,221.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,399.90 : 17,099.06 = 5,481 : x
  2. Step 2: Convert to fraction form
    11,399.90/17,099.06 = 5,481/x
  3. Step 3: Cross multiply
    11,399.90x = 17,099.06 × 5,481
  4. Step 4: Simplify right side
    11,399.90x = 93,719,920.46
  5. Step 5: Solve for x
    x = 93,719,920.46/11,399.90
  6. Step 6: Final answer
    x = 8,221.12

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1.5x scale

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.