Home / 18,721.20-27,999.18-16,655.70

Finding the Fourth Proportional to 18,721.20, 27,999.18 and 16,655.70

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Solution

The fourth proportional to 18,721.20, 27,999.18 and 16,655.70 is: 24,910.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.20 : 27,999.18 = 16,655.70 : x
  2. Step 2: Convert to fraction form
    18,721.20/27,999.18 = 16,655.70/x
  3. Step 3: Cross multiply
    18,721.20x = 27,999.18 × 16,655.70
  4. Step 4: Simplify right side
    18,721.20x = 466,345,942.33
  5. Step 5: Solve for x
    x = 466,345,942.33/18,721.20
  6. Step 6: Final answer
    x = 24,910.05

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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.