Home / 18,278.20-27,412.98-7,884.28

Finding the Fourth Proportional to 18,278.20, 27,412.98 and 7,884.28

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Solution

The fourth proportional to 18,278.20, 27,412.98 and 7,884.28 is: 11,824.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.20 : 27,412.98 = 7,884.28 : x
  2. Step 2: Convert to fraction form
    18,278.20/27,412.98 = 7,884.28/x
  3. Step 3: Cross multiply
    18,278.20x = 27,412.98 × 7,884.28
  4. Step 4: Simplify right side
    18,278.20x = 216,131,609.95
  5. Step 5: Solve for x
    x = 216,131,609.95/18,278.20
  6. Step 6: Final answer
    x = 11,824.56

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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.