Home / 10,119.78-15,178.32-2,724.84

Finding the Fourth Proportional to 10,119.78, 15,178.32 and 2,724.84

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Solution

The fourth proportional to 10,119.78, 15,178.32 and 2,724.84 is: 4,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,119.78 : 15,178.32 = 2,724.84 : x
  2. Step 2: Convert to fraction form
    10,119.78/15,178.32 = 2,724.84/x
  3. Step 3: Cross multiply
    10,119.78x = 15,178.32 × 2,724.84
  4. Step 4: Simplify right side
    10,119.78x = 41,358,493.47
  5. Step 5: Solve for x
    x = 41,358,493.47/10,119.78
  6. Step 6: Final answer
    x = 4,086.90

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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.