Home / 20,105.19-30,148.20-9,011.97

Finding the Fourth Proportional to 20,105.19, 30,148.20 and 9,011.97

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Solution

The fourth proportional to 20,105.19, 30,148.20 and 9,011.97 is: 13,513.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.19 : 30,148.20 = 9,011.97 : x
  2. Step 2: Convert to fraction form
    20,105.19/30,148.20 = 9,011.97/x
  3. Step 3: Cross multiply
    20,105.19x = 30,148.20 × 9,011.97
  4. Step 4: Simplify right side
    20,105.19x = 271,694,673.95
  5. Step 5: Solve for x
    x = 271,694,673.95/20,105.19
  6. Step 6: Final answer
    x = 13,513.66

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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.