Home / 18,730.20-28,096.74-5,581.56

Finding the Fourth Proportional to 18,730.20, 28,096.74 and 5,581.56

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Solution

The fourth proportional to 18,730.20, 28,096.74 and 5,581.56 is: 8,372.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.20 : 28,096.74 = 5,581.56 : x
  2. Step 2: Convert to fraction form
    18,730.20/28,096.74 = 5,581.56/x
  3. Step 3: Cross multiply
    18,730.20x = 28,096.74 × 5,581.56
  4. Step 4: Simplify right side
    18,730.20x = 156,823,640.11
  5. Step 5: Solve for x
    x = 156,823,640.11/18,730.20
  6. Step 6: Final answer
    x = 8,372.77

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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.