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Finding the Fourth Proportional to 20,167.10, 30,250.65 and 10,835.90

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Solution

The fourth proportional to 20,167.10, 30,250.65 and 10,835.90 is: 16,253.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.10 : 30,250.65 = 10,835.90 : x
  2. Step 2: Convert to fraction form
    20,167.10/30,250.65 = 10,835.90/x
  3. Step 3: Cross multiply
    20,167.10x = 30,250.65 × 10,835.90
  4. Step 4: Simplify right side
    20,167.10x = 327,793,018.34
  5. Step 5: Solve for x
    x = 327,793,018.34/20,167.10
  6. Step 6: Final answer
    x = 16,253.85

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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.