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Finding the Fourth Proportional to 10,808.70, 16,180.65 and 10,167.90

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Solution

The fourth proportional to 10,808.70, 16,180.65 and 10,167.90 is: 15,221.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,808.70 : 16,180.65 = 10,167.90 : x
  2. Step 2: Convert to fraction form
    10,808.70/16,180.65 = 10,167.90/x
  3. Step 3: Cross multiply
    10,808.70x = 16,180.65 × 10,167.90
  4. Step 4: Simplify right side
    10,808.70x = 164,523,231.14
  5. Step 5: Solve for x
    x = 164,523,231.14/10,808.70
  6. Step 6: Final answer
    x = 15,221.37

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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.