Home / 10,147.39-15,221.76-3,126.97

Finding the Fourth Proportional to 10,147.39, 15,221.76 and 3,126.97

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Solution

The fourth proportional to 10,147.39, 15,221.76 and 3,126.97 is: 4,690.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,147.39 : 15,221.76 = 3,126.97 : x
  2. Step 2: Convert to fraction form
    10,147.39/15,221.76 = 3,126.97/x
  3. Step 3: Cross multiply
    10,147.39x = 15,221.76 × 3,126.97
  4. Step 4: Simplify right side
    10,147.39x = 47,597,986.87
  5. Step 5: Solve for x
    x = 47,597,986.87/10,147.39
  6. Step 6: Final answer
    x = 4,690.66

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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.