Home / 18,121.42-27,177.20-4,970.66

Finding the Fourth Proportional to 18,121.42, 27,177.20 and 4,970.66

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Solution

The fourth proportional to 18,121.42, 27,177.20 and 4,970.66 is: 7,454.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.42 : 27,177.20 = 4,970.66 : x
  2. Step 2: Convert to fraction form
    18,121.42/27,177.20 = 4,970.66/x
  3. Step 3: Cross multiply
    18,121.42x = 27,177.20 × 4,970.66
  4. Step 4: Simplify right side
    18,121.42x = 135,088,620.95
  5. Step 5: Solve for x
    x = 135,088,620.95/18,121.42
  6. Step 6: Final answer
    x = 7,454.64

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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.