Home / 14,099.20-19,456.64-8,131.12

Finding the Fourth Proportional to 14,099.20, 19,456.64 and 8,131.12

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Solution

The fourth proportional to 14,099.20, 19,456.64 and 8,131.12 is: 11,220.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,099.20 : 19,456.64 = 8,131.12 : x
  2. Step 2: Convert to fraction form
    14,099.20/19,456.64 = 8,131.12/x
  3. Step 3: Cross multiply
    14,099.20x = 19,456.64 × 8,131.12
  4. Step 4: Simplify right side
    14,099.20x = 158,204,274.64
  5. Step 5: Solve for x
    x = 158,204,274.64/14,099.20
  6. Step 6: Final answer
    x = 11,220.80

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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.