Home / 18,217.95-27,335.43-7,121.76

Finding the Fourth Proportional to 18,217.95, 27,335.43 and 7,121.76

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Solution

The fourth proportional to 18,217.95, 27,335.43 and 7,121.76 is: 10,685.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,217.95 : 27,335.43 = 7,121.76 : x
  2. Step 2: Convert to fraction form
    18,217.95/27,335.43 = 7,121.76/x
  3. Step 3: Cross multiply
    18,217.95x = 27,335.43 × 7,121.76
  4. Step 4: Simplify right side
    18,217.95x = 194,676,371.96
  5. Step 5: Solve for x
    x = 194,676,371.96/18,217.95
  6. Step 6: Final answer
    x = 10,685.96

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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.