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Finding the Fourth Proportional to 10,868.94, 16,308.90 and 8,101.17

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Solution

The fourth proportional to 10,868.94, 16,308.90 and 8,101.17 is: 12,155.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,868.94 : 16,308.90 = 8,101.17 : x
  2. Step 2: Convert to fraction form
    10,868.94/16,308.90 = 8,101.17/x
  3. Step 3: Cross multiply
    10,868.94x = 16,308.90 × 8,101.17
  4. Step 4: Simplify right side
    10,868.94x = 132,121,171.41
  5. Step 5: Solve for x
    x = 132,121,171.41/10,868.94
  6. Step 6: Final answer
    x = 12,155.85

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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.