Home / 10,542.96-15,815.84-3,147.68

Finding the Fourth Proportional to 10,542.96, 15,815.84 and 3,147.68

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Solution

The fourth proportional to 10,542.96, 15,815.84 and 3,147.68 is: 4,721.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,542.96 : 15,815.84 = 3,147.68 : x
  2. Step 2: Convert to fraction form
    10,542.96/15,815.84 = 3,147.68/x
  3. Step 3: Cross multiply
    10,542.96x = 15,815.84 × 3,147.68
  4. Step 4: Simplify right side
    10,542.96x = 49,783,203.25
  5. Step 5: Solve for x
    x = 49,783,203.25/10,542.96
  6. Step 6: Final answer
    x = 4,721.94

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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.