Home / 12,490.68-17,240.02-8,242.50

Finding the Fourth Proportional to 12,490.68, 17,240.02 and 8,242.50

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Solution

The fourth proportional to 12,490.68, 17,240.02 and 8,242.50 is: 11,376.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.68 : 17,240.02 = 8,242.50 : x
  2. Step 2: Convert to fraction form
    12,490.68/17,240.02 = 8,242.50/x
  3. Step 3: Cross multiply
    12,490.68x = 17,240.02 × 8,242.50
  4. Step 4: Simplify right side
    12,490.68x = 142,100,864.85
  5. Step 5: Solve for x
    x = 142,100,864.85/12,490.68
  6. Step 6: Final answer
    x = 11,376.55

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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.