Home / 20,120.86-30,195.15-9,039.97

Finding the Fourth Proportional to 20,120.86, 30,195.15 and 9,039.97

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Solution

The fourth proportional to 20,120.86, 30,195.15 and 9,039.97 is: 13,566.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.86 : 30,195.15 = 9,039.97 : x
  2. Step 2: Convert to fraction form
    20,120.86/30,195.15 = 9,039.97/x
  3. Step 3: Cross multiply
    20,120.86x = 30,195.15 × 9,039.97
  4. Step 4: Simplify right side
    20,120.86x = 272,963,250.15
  5. Step 5: Solve for x
    x = 272,963,250.15/20,120.86
  6. Step 6: Final answer
    x = 13,566.18

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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.