Home / 10,542.87-15,813.76-3,147.39

Finding the Fourth Proportional to 10,542.87, 15,813.76 and 3,147.39

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Solution

The fourth proportional to 10,542.87, 15,813.76 and 3,147.39 is: 4,720.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,542.87 : 15,813.76 = 3,147.39 : x
  2. Step 2: Convert to fraction form
    10,542.87/15,813.76 = 3,147.39/x
  3. Step 3: Cross multiply
    10,542.87x = 15,813.76 × 3,147.39
  4. Step 4: Simplify right side
    10,542.87x = 49,771,983.15
  5. Step 5: Solve for x
    x = 49,771,983.15/10,542.87
  6. Step 6: Final answer
    x = 4,720.92

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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.