Home / 22,161.71-30,587.13-13,209.80

Finding the Fourth Proportional to 22,161.71, 30,587.13 and 13,209.80

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Solution

The fourth proportional to 22,161.71, 30,587.13 and 13,209.80 is: 18,231.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,161.71 : 30,587.13 = 13,209.80 : x
  2. Step 2: Convert to fraction form
    22,161.71/30,587.13 = 13,209.80/x
  3. Step 3: Cross multiply
    22,161.71x = 30,587.13 × 13,209.80
  4. Step 4: Simplify right side
    22,161.71x = 404,049,716.94
  5. Step 5: Solve for x
    x = 404,049,716.94/22,161.71
  6. Step 6: Final answer
    x = 18,231.88

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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.