Home / 47,452.18-71,178.28-12,391.53

Finding the Fourth Proportional to 47,452.18, 71,178.28 and 12,391.53

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Solution

The fourth proportional to 47,452.18, 71,178.28 and 12,391.53 is: 18,587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,452.18 : 71,178.28 = 12,391.53 : x
  2. Step 2: Convert to fraction form
    47,452.18/71,178.28 = 12,391.53/x
  3. Step 3: Cross multiply
    47,452.18x = 71,178.28 × 12,391.53
  4. Step 4: Simplify right side
    47,452.18x = 882,007,791.97
  5. Step 5: Solve for x
    x = 882,007,791.97/47,452.18
  6. Step 6: Final answer
    x = 18,587.30

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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.