Home / 22,129.75-30,540.56-13,519.62

Finding the Fourth Proportional to 22,129.75, 30,540.56 and 13,519.62

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Solution

The fourth proportional to 22,129.75, 30,540.56 and 13,519.62 is: 18,657.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,129.75 : 30,540.56 = 13,519.62 : x
  2. Step 2: Convert to fraction form
    22,129.75/30,540.56 = 13,519.62/x
  3. Step 3: Cross multiply
    22,129.75x = 30,540.56 × 13,519.62
  4. Step 4: Simplify right side
    22,129.75x = 412,896,613.08
  5. Step 5: Solve for x
    x = 412,896,613.08/22,129.75
  6. Step 6: Final answer
    x = 18,657.99

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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.