Home / 12,147.96-18,126.61-11,404.92

Finding the Fourth Proportional to 12,147.96, 18,126.61 and 11,404.92

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Solution

The fourth proportional to 12,147.96, 18,126.61 and 11,404.92 is: 17,017.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.96 : 18,126.61 = 11,404.92 : x
  2. Step 2: Convert to fraction form
    12,147.96/18,126.61 = 11,404.92/x
  3. Step 3: Cross multiply
    12,147.96x = 18,126.61 × 11,404.92
  4. Step 4: Simplify right side
    12,147.96x = 206,732,536.92
  5. Step 5: Solve for x
    x = 206,732,536.92/12,147.96
  6. Step 6: Final answer
    x = 17,017.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.