Home / 10,500.40-15,751.10-3,105.43

Finding the Fourth Proportional to 10,500.40, 15,751.10 and 3,105.43

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Solution

The fourth proportional to 10,500.40, 15,751.10 and 3,105.43 is: 4,658.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,500.40 : 15,751.10 = 3,105.43 : x
  2. Step 2: Convert to fraction form
    10,500.40/15,751.10 = 3,105.43/x
  3. Step 3: Cross multiply
    10,500.40x = 15,751.10 × 3,105.43
  4. Step 4: Simplify right side
    10,500.40x = 48,913,922.95
  5. Step 5: Solve for x
    x = 48,913,922.95/10,500.40
  6. Step 6: Final answer
    x = 4,658.29

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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.