Home / 18,517.32-27,780.84-5,370.66

Finding the Fourth Proportional to 18,517.32, 27,780.84 and 5,370.66

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Solution

The fourth proportional to 18,517.32, 27,780.84 and 5,370.66 is: 8,057.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517.32 : 27,780.84 = 5,370.66 : x
  2. Step 2: Convert to fraction form
    18,517.32/27,780.84 = 5,370.66/x
  3. Step 3: Cross multiply
    18,517.32x = 27,780.84 × 5,370.66
  4. Step 4: Simplify right side
    18,517.32x = 149,201,446.15
  5. Step 5: Solve for x
    x = 149,201,446.15/18,517.32
  6. Step 6: Final answer
    x = 8,057.40

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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.