Home / 10,542.42-15,814.14-3,147.46

Finding the Fourth Proportional to 10,542.42, 15,814.14 and 3,147.46

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Solution

The fourth proportional to 10,542.42, 15,814.14 and 3,147.46 is: 4,721.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,542.42 : 15,814.14 = 3,147.46 : x
  2. Step 2: Convert to fraction form
    10,542.42/15,814.14 = 3,147.46/x
  3. Step 3: Cross multiply
    10,542.42x = 15,814.14 × 3,147.46
  4. Step 4: Simplify right side
    10,542.42x = 49,774,321.75
  5. Step 5: Solve for x
    x = 49,774,321.75/10,542.42
  6. Step 6: Final answer
    x = 4,721.34

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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.