Home / 10,748.70-16,125.45-8,415.90

Finding the Fourth Proportional to 10,748.70, 16,125.45 and 8,415.90

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Solution

The fourth proportional to 10,748.70, 16,125.45 and 8,415.90 is: 12,625.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,748.70 : 16,125.45 = 8,415.90 : x
  2. Step 2: Convert to fraction form
    10,748.70/16,125.45 = 8,415.90/x
  3. Step 3: Cross multiply
    10,748.70x = 16,125.45 × 8,415.90
  4. Step 4: Simplify right side
    10,748.70x = 135,710,174.66
  5. Step 5: Solve for x
    x = 135,710,174.66/10,748.70
  6. Step 6: Final answer
    x = 12,625.73

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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.