Home / 11,721.28-17,583.84-7,132.48

Finding the Fourth Proportional to 11,721.28, 17,583.84 and 7,132.48

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Solution

The fourth proportional to 11,721.28, 17,583.84 and 7,132.48 is: 10,699.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.28 : 17,583.84 = 7,132.48 : x
  2. Step 2: Convert to fraction form
    11,721.28/17,583.84 = 7,132.48/x
  3. Step 3: Cross multiply
    11,721.28x = 17,583.84 × 7,132.48
  4. Step 4: Simplify right side
    11,721.28x = 125,416,387.12
  5. Step 5: Solve for x
    x = 125,416,387.12/11,721.28
  6. Step 6: Final answer
    x = 10,699.89

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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.