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Finding the Fourth Proportional to 15,068.60, 20,793.76 and 8,353.83

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Solution

The fourth proportional to 15,068.60, 20,793.76 and 8,353.83 is: 11,527.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,068.60 : 20,793.76 = 8,353.83 : x
  2. Step 2: Convert to fraction form
    15,068.60/20,793.76 = 8,353.83/x
  3. Step 3: Cross multiply
    15,068.60x = 20,793.76 × 8,353.83
  4. Step 4: Simplify right side
    15,068.60x = 173,707,455.73
  5. Step 5: Solve for x
    x = 173,707,455.73/15,068.60
  6. Step 6: Final answer
    x = 11,527.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.