Home / 20,278.42-27,982.40-11,324.68

Finding the Fourth Proportional to 20,278.42, 27,982.40 and 11,324.68

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Solution

The fourth proportional to 20,278.42, 27,982.40 and 11,324.68 is: 15,627.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.42 : 27,982.40 = 11,324.68 : x
  2. Step 2: Convert to fraction form
    20,278.42/27,982.40 = 11,324.68/x
  3. Step 3: Cross multiply
    20,278.42x = 27,982.40 × 11,324.68
  4. Step 4: Simplify right side
    20,278.42x = 316,891,599.05
  5. Step 5: Solve for x
    x = 316,891,599.05/20,278.42
  6. Step 6: Final answer
    x = 15,627.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.