Home / 18,613.50-25,656.68-15,250.38

Finding the Fourth Proportional to 18,613.50, 25,656.68 and 15,250.38

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Solution

The fourth proportional to 18,613.50, 25,656.68 and 15,250.38 is: 21,020.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,613.50 : 25,656.68 = 15,250.38 : x
  2. Step 2: Convert to fraction form
    18,613.50/25,656.68 = 15,250.38/x
  3. Step 3: Cross multiply
    18,613.50x = 25,656.68 × 15,250.38
  4. Step 4: Simplify right side
    18,613.50x = 391,274,119.54
  5. Step 5: Solve for x
    x = 391,274,119.54/18,613.50
  6. Step 6: Final answer
    x = 21,020.99

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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.