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Finding the Fourth Proportional to 20,350.76, 30,526.72 and 6,499.76

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Solution

The fourth proportional to 20,350.76, 30,526.72 and 6,499.76 is: 9,749.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.76 : 30,526.72 = 6,499.76 : x
  2. Step 2: Convert to fraction form
    20,350.76/30,526.72 = 6,499.76/x
  3. Step 3: Cross multiply
    20,350.76x = 30,526.72 × 6,499.76
  4. Step 4: Simplify right side
    20,350.76x = 198,416,353.59
  5. Step 5: Solve for x
    x = 198,416,353.59/20,350.76
  6. Step 6: Final answer
    x = 9,749.83

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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.