Home / 12,490.42-17,229.23-8,239.97

Finding the Fourth Proportional to 12,490.42, 17,229.23 and 8,239.97

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Solution

The fourth proportional to 12,490.42, 17,229.23 and 8,239.97 is: 11,366.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.42 : 17,229.23 = 8,239.97 : x
  2. Step 2: Convert to fraction form
    12,490.42/17,229.23 = 8,239.97/x
  3. Step 3: Cross multiply
    12,490.42x = 17,229.23 × 8,239.97
  4. Step 4: Simplify right side
    12,490.42x = 141,968,315.85
  5. Step 5: Solve for x
    x = 141,968,315.85/12,490.42
  6. Step 6: Final answer
    x = 11,366.18

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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.