Home / 11,515.52-17,189.20-9,882.56

Finding the Fourth Proportional to 11,515.52, 17,189.20 and 9,882.56

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Solution

The fourth proportional to 11,515.52, 17,189.20 and 9,882.56 is: 14,751.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,515.52 : 17,189.20 = 9,882.56 : x
  2. Step 2: Convert to fraction form
    11,515.52/17,189.20 = 9,882.56/x
  3. Step 3: Cross multiply
    11,515.52x = 17,189.20 × 9,882.56
  4. Step 4: Simplify right side
    11,515.52x = 169,873,300.35
  5. Step 5: Solve for x
    x = 169,873,300.35/11,515.52
  6. Step 6: Final answer
    x = 14,751.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.