Home / 10,500.87-15,754.39-3,105.53

Finding the Fourth Proportional to 10,500.87, 15,754.39 and 3,105.53

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Solution

The fourth proportional to 10,500.87, 15,754.39 and 3,105.53 is: 4,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,500.87 : 15,754.39 = 3,105.53 : x
  2. Step 2: Convert to fraction form
    10,500.87/15,754.39 = 3,105.53/x
  3. Step 3: Cross multiply
    10,500.87x = 15,754.39 × 3,105.53
  4. Step 4: Simplify right side
    10,500.87x = 48,925,644.24
  5. Step 5: Solve for x
    x = 48,925,644.24/10,500.87
  6. Step 6: Final answer
    x = 4,659.20

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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.