Home / 10,542.42-15,815.91-3,147.48

Finding the Fourth Proportional to 10,542.42, 15,815.91 and 3,147.48

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Solution

The fourth proportional to 10,542.42, 15,815.91 and 3,147.48 is: 4,721.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,542.42 : 15,815.91 = 3,147.48 : x
  2. Step 2: Convert to fraction form
    10,542.42/15,815.91 = 3,147.48/x
  3. Step 3: Cross multiply
    10,542.42x = 15,815.91 × 3,147.48
  4. Step 4: Simplify right side
    10,542.42x = 49,780,260.41
  5. Step 5: Solve for x
    x = 49,780,260.41/10,542.42
  6. Step 6: Final answer
    x = 4,721.90

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1.5x scale

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.