Home / 10,748.30-16,122.45-8,123.90

Finding the Fourth Proportional to 10,748.30, 16,122.45 and 8,123.90

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Solution

The fourth proportional to 10,748.30, 16,122.45 and 8,123.90 is: 12,185.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,748.30 : 16,122.45 = 8,123.90 : x
  2. Step 2: Convert to fraction form
    10,748.30/16,122.45 = 8,123.90/x
  3. Step 3: Cross multiply
    10,748.30x = 16,122.45 × 8,123.90
  4. Step 4: Simplify right side
    10,748.30x = 130,977,171.56
  5. Step 5: Solve for x
    x = 130,977,171.56/10,748.30
  6. Step 6: Final answer
    x = 12,185.85

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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.