Home / 13,613.28-20,418.06-5,292.54

Finding the Fourth Proportional to 13,613.28, 20,418.06 and 5,292.54

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Solution

The fourth proportional to 13,613.28, 20,418.06 and 5,292.54 is: 7,938.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.28 : 20,418.06 = 5,292.54 : x
  2. Step 2: Convert to fraction form
    13,613.28/20,418.06 = 5,292.54/x
  3. Step 3: Cross multiply
    13,613.28x = 20,418.06 × 5,292.54
  4. Step 4: Simplify right side
    13,613.28x = 108,063,399.27
  5. Step 5: Solve for x
    x = 108,063,399.27/13,613.28
  6. Step 6: Final answer
    x = 7,938.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.