Home / 15,231.26-21,019.02-8,516.90

Finding the Fourth Proportional to 15,231.26, 21,019.02 and 8,516.90

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Solution

The fourth proportional to 15,231.26, 21,019.02 and 8,516.90 is: 11,753.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,231.26 : 21,019.02 = 8,516.90 : x
  2. Step 2: Convert to fraction form
    15,231.26/21,019.02 = 8,516.90/x
  3. Step 3: Cross multiply
    15,231.26x = 21,019.02 × 8,516.90
  4. Step 4: Simplify right side
    15,231.26x = 179,016,891.44
  5. Step 5: Solve for x
    x = 179,016,891.44/15,231.26
  6. Step 6: Final answer
    x = 11,753.26

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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.