Home / 20,402.90-30,601.92-5,613.32

Finding the Fourth Proportional to 20,402.90, 30,601.92 and 5,613.32

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Solution

The fourth proportional to 20,402.90, 30,601.92 and 5,613.32 is: 8,419.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.90 : 30,601.92 = 5,613.32 : x
  2. Step 2: Convert to fraction form
    20,402.90/30,601.92 = 5,613.32/x
  3. Step 3: Cross multiply
    20,402.90x = 30,601.92 × 5,613.32
  4. Step 4: Simplify right side
    20,402.90x = 171,778,369.57
  5. Step 5: Solve for x
    x = 171,778,369.57/20,402.90
  6. Step 6: Final answer
    x = 8,419.31

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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.