Home / 18,721.92-28,096.71-8,861.19

Finding the Fourth Proportional to 18,721.92, 28,096.71 and 8,861.19

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Solution

The fourth proportional to 18,721.92, 28,096.71 and 8,861.19 is: 13,298.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.92 : 28,096.71 = 8,861.19 : x
  2. Step 2: Convert to fraction form
    18,721.92/28,096.71 = 8,861.19/x
  3. Step 3: Cross multiply
    18,721.92x = 28,096.71 × 8,861.19
  4. Step 4: Simplify right side
    18,721.92x = 248,970,439.70
  5. Step 5: Solve for x
    x = 248,970,439.70/18,721.92
  6. Step 6: Final answer
    x = 13,298.34

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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.