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Finding the Fourth Proportional to 18,800.57, 28,200.92 and 4,760.59

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Solution

The fourth proportional to 18,800.57, 28,200.92 and 4,760.59 is: 7,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,800.57 : 28,200.92 = 4,760.59 : x
  2. Step 2: Convert to fraction form
    18,800.57/28,200.92 = 4,760.59/x
  3. Step 3: Cross multiply
    18,800.57x = 28,200.92 × 4,760.59
  4. Step 4: Simplify right side
    18,800.57x = 134,253,061.81
  5. Step 5: Solve for x
    x = 134,253,061.81/18,800.57
  6. Step 6: Final answer
    x = 7,140.90

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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.