Home / 10,103.89-15,155.67-3,178.39

Finding the Fourth Proportional to 10,103.89, 15,155.67 and 3,178.39

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Solution

The fourth proportional to 10,103.89, 15,155.67 and 3,178.39 is: 4,767.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,103.89 : 15,155.67 = 3,178.39 : x
  2. Step 2: Convert to fraction form
    10,103.89/15,155.67 = 3,178.39/x
  3. Step 3: Cross multiply
    10,103.89x = 15,155.67 × 3,178.39
  4. Step 4: Simplify right side
    10,103.89x = 48,170,629.97
  5. Step 5: Solve for x
    x = 48,170,629.97/10,103.89
  6. Step 6: Final answer
    x = 4,767.53

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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.