Home / 11,987.97-16,545.56-7,515.60

Finding the Fourth Proportional to 11,987.97, 16,545.56 and 7,515.60

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Solution

The fourth proportional to 11,987.97, 16,545.56 and 7,515.60 is: 10,372.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.97 : 16,545.56 = 7,515.60 : x
  2. Step 2: Convert to fraction form
    11,987.97/16,545.56 = 7,515.60/x
  3. Step 3: Cross multiply
    11,987.97x = 16,545.56 × 7,515.60
  4. Step 4: Simplify right side
    11,987.97x = 124,349,773.16
  5. Step 5: Solve for x
    x = 124,349,773.16/11,987.97
  6. Step 6: Final answer
    x = 10,372.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.