Home / 20,002.70-30,005.76-5,211.62

Finding the Fourth Proportional to 20,002.70, 30,005.76 and 5,211.62

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Solution

The fourth proportional to 20,002.70, 30,005.76 and 5,211.62 is: 7,817.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,002.70 : 30,005.76 = 5,211.62 : x
  2. Step 2: Convert to fraction form
    20,002.70/30,005.76 = 5,211.62/x
  3. Step 3: Cross multiply
    20,002.70x = 30,005.76 × 5,211.62
  4. Step 4: Simplify right side
    20,002.70x = 156,378,618.93
  5. Step 5: Solve for x
    x = 156,378,618.93/20,002.70
  6. Step 6: Final answer
    x = 7,817.88

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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.