Home / 21,277.62-29,358.23-12,198.78

Finding the Fourth Proportional to 21,277.62, 29,358.23 and 12,198.78

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Solution

The fourth proportional to 21,277.62, 29,358.23 and 12,198.78 is: 16,831.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.62 : 29,358.23 = 12,198.78 : x
  2. Step 2: Convert to fraction form
    21,277.62/29,358.23 = 12,198.78/x
  3. Step 3: Cross multiply
    21,277.62x = 29,358.23 × 12,198.78
  4. Step 4: Simplify right side
    21,277.62x = 358,134,527.97
  5. Step 5: Solve for x
    x = 358,134,527.97/21,277.62
  6. Step 6: Final answer
    x = 16,831.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.