Home / 10,154.78-15,221.79-3,912.35

Finding the Fourth Proportional to 10,154.78, 15,221.79 and 3,912.35

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Solution

The fourth proportional to 10,154.78, 15,221.79 and 3,912.35 is: 5,864.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,154.78 : 15,221.79 = 3,912.35 : x
  2. Step 2: Convert to fraction form
    10,154.78/15,221.79 = 3,912.35/x
  3. Step 3: Cross multiply
    10,154.78x = 15,221.79 × 3,912.35
  4. Step 4: Simplify right side
    10,154.78x = 59,552,912.49
  5. Step 5: Solve for x
    x = 59,552,912.49/10,154.78
  6. Step 6: Final answer
    x = 5,864.52

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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.