Home / 16,221.78-22,386.96-9,146.88

Finding the Fourth Proportional to 16,221.78, 22,386.96 and 9,146.88

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Solution

The fourth proportional to 16,221.78, 22,386.96 and 9,146.88 is: 12,623.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,221.78 : 22,386.96 = 9,146.88 : x
  2. Step 2: Convert to fraction form
    16,221.78/22,386.96 = 9,146.88/x
  3. Step 3: Cross multiply
    16,221.78x = 22,386.96 × 9,146.88
  4. Step 4: Simplify right side
    16,221.78x = 204,770,836.68
  5. Step 5: Solve for x
    x = 204,770,836.68/16,221.78
  6. Step 6: Final answer
    x = 12,623.20

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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.