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Finding the Fourth Proportional to 12,498.48, 18,756.09 and 8,343.18

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Solution

The fourth proportional to 12,498.48, 18,756.09 and 8,343.18 is: 12,520.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,498.48 : 18,756.09 = 8,343.18 : x
  2. Step 2: Convert to fraction form
    12,498.48/18,756.09 = 8,343.18/x
  3. Step 3: Cross multiply
    12,498.48x = 18,756.09 × 8,343.18
  4. Step 4: Simplify right side
    12,498.48x = 156,485,434.97
  5. Step 5: Solve for x
    x = 156,485,434.97/12,498.48
  6. Step 6: Final answer
    x = 12,520.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.