Home / 20,371.43-30,555.78-5,580.47

Finding the Fourth Proportional to 20,371.43, 30,555.78 and 5,580.47

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Solution

The fourth proportional to 20,371.43, 30,555.78 and 5,580.47 is: 8,370.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,371.43 : 30,555.78 = 5,580.47 : x
  2. Step 2: Convert to fraction form
    20,371.43/30,555.78 = 5,580.47/x
  3. Step 3: Cross multiply
    20,371.43x = 30,555.78 × 5,580.47
  4. Step 4: Simplify right side
    20,371.43x = 170,515,613.62
  5. Step 5: Solve for x
    x = 170,515,613.62/20,371.43
  6. Step 6: Final answer
    x = 8,370.33

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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.