Home / 20,134.92-27,775.28-12,853.44

Finding the Fourth Proportional to 20,134.92, 27,775.28 and 12,853.44

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Solution

The fourth proportional to 20,134.92, 27,775.28 and 12,853.44 is: 17,730.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,134.92 : 27,775.28 = 12,853.44 : x
  2. Step 2: Convert to fraction form
    20,134.92/27,775.28 = 12,853.44/x
  3. Step 3: Cross multiply
    20,134.92x = 27,775.28 × 12,853.44
  4. Step 4: Simplify right side
    20,134.92x = 357,007,894.96
  5. Step 5: Solve for x
    x = 357,007,894.96/20,134.92
  6. Step 6: Final answer
    x = 17,730.78

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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.