Home / 15,231.76-21,020.02-8,517.44

Finding the Fourth Proportional to 15,231.76, 21,020.02 and 8,517.44

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Solution

The fourth proportional to 15,231.76, 21,020.02 and 8,517.44 is: 11,754.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,231.76 : 21,020.02 = 8,517.44 : x
  2. Step 2: Convert to fraction form
    15,231.76/21,020.02 = 8,517.44/x
  3. Step 3: Cross multiply
    15,231.76x = 21,020.02 × 8,517.44
  4. Step 4: Simplify right side
    15,231.76x = 179,036,790.41
  5. Step 5: Solve for x
    x = 179,036,790.41/15,231.76
  6. Step 6: Final answer
    x = 11,754.18

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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.