Home / 16,391.72-22,619.84-9,221.42

Finding the Fourth Proportional to 16,391.72, 22,619.84 and 9,221.42

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Solution

The fourth proportional to 16,391.72, 22,619.84 and 9,221.42 is: 12,725.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,391.72 : 22,619.84 = 9,221.42 : x
  2. Step 2: Convert to fraction form
    16,391.72/22,619.84 = 9,221.42/x
  3. Step 3: Cross multiply
    16,391.72x = 22,619.84 × 9,221.42
  4. Step 4: Simplify right side
    16,391.72x = 208,587,044.97
  5. Step 5: Solve for x
    x = 208,587,044.97/16,391.72
  6. Step 6: Final answer
    x = 12,725.15

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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.