Home / 10,400.38-15,591.04-3,821.56

Finding the Fourth Proportional to 10,400.38, 15,591.04 and 3,821.56

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Solution

The fourth proportional to 10,400.38, 15,591.04 and 3,821.56 is: 5,728.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,400.38 : 15,591.04 = 3,821.56 : x
  2. Step 2: Convert to fraction form
    10,400.38/15,591.04 = 3,821.56/x
  3. Step 3: Cross multiply
    10,400.38x = 15,591.04 × 3,821.56
  4. Step 4: Simplify right side
    10,400.38x = 59,582,094.82
  5. Step 5: Solve for x
    x = 59,582,094.82/10,400.38
  6. Step 6: Final answer
    x = 5,728.84

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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.