Home / 20,613.57-30,920.42-5,031.19

Finding the Fourth Proportional to 20,613.57, 30,920.42 and 5,031.19

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Solution

The fourth proportional to 20,613.57, 30,920.42 and 5,031.19 is: 7,546.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.57 : 30,920.42 = 5,031.19 : x
  2. Step 2: Convert to fraction form
    20,613.57/30,920.42 = 5,031.19/x
  3. Step 3: Cross multiply
    20,613.57x = 30,920.42 × 5,031.19
  4. Step 4: Simplify right side
    20,613.57x = 155,566,559.13
  5. Step 5: Solve for x
    x = 155,566,559.13/20,613.57
  6. Step 6: Final answer
    x = 7,546.80

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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.