Home / 18,721.24-28,086.72-5,574.94

Finding the Fourth Proportional to 18,721.24, 28,086.72 and 5,574.94

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Solution

The fourth proportional to 18,721.24, 28,086.72 and 5,574.94 is: 8,363.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.24 : 28,086.72 = 5,574.94 : x
  2. Step 2: Convert to fraction form
    18,721.24/28,086.72 = 5,574.94/x
  3. Step 3: Cross multiply
    18,721.24x = 28,086.72 × 5,574.94
  4. Step 4: Simplify right side
    18,721.24x = 156,581,778.80
  5. Step 5: Solve for x
    x = 156,581,778.80/18,721.24
  6. Step 6: Final answer
    x = 8,363.86

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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.