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Finding the Fourth Proportional to 10,881.30, 16,321.95 and 9,455.70

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Solution

The fourth proportional to 10,881.30, 16,321.95 and 9,455.70 is: 14,183.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.30 : 16,321.95 = 9,455.70 : x
  2. Step 2: Convert to fraction form
    10,881.30/16,321.95 = 9,455.70/x
  3. Step 3: Cross multiply
    10,881.30x = 16,321.95 × 9,455.70
  4. Step 4: Simplify right side
    10,881.30x = 154,335,462.62
  5. Step 5: Solve for x
    x = 154,335,462.62/10,881.30
  6. Step 6: Final answer
    x = 14,183.55

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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.