Home / 11,239.96-15,508.02-6,989.92

Finding the Fourth Proportional to 11,239.96, 15,508.02 and 6,989.92

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Solution

The fourth proportional to 11,239.96, 15,508.02 and 6,989.92 is: 9,644.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,239.96 : 15,508.02 = 6,989.92 : x
  2. Step 2: Convert to fraction form
    11,239.96/15,508.02 = 6,989.92/x
  3. Step 3: Cross multiply
    11,239.96x = 15,508.02 × 6,989.92
  4. Step 4: Simplify right side
    11,239.96x = 108,399,819.16
  5. Step 5: Solve for x
    x = 108,399,819.16/11,239.96
  6. Step 6: Final answer
    x = 9,644.15

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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.