Home / 22,451.28-30,982.10-12,379.72

Finding the Fourth Proportional to 22,451.28, 30,982.10 and 12,379.72

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Solution

The fourth proportional to 22,451.28, 30,982.10 and 12,379.72 is: 17,083.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,451.28 : 30,982.10 = 12,379.72 : x
  2. Step 2: Convert to fraction form
    22,451.28/30,982.10 = 12,379.72/x
  3. Step 3: Cross multiply
    22,451.28x = 30,982.10 × 12,379.72
  4. Step 4: Simplify right side
    22,451.28x = 383,549,717.16
  5. Step 5: Solve for x
    x = 383,549,717.16/22,451.28
  6. Step 6: Final answer
    x = 17,083.65

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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.