Home / 20,204.54-27,882.15-11,820.86

Finding the Fourth Proportional to 20,204.54, 27,882.15 and 11,820.86

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Solution

The fourth proportional to 20,204.54, 27,882.15 and 11,820.86 is: 16,312.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,204.54 : 27,882.15 = 11,820.86 : x
  2. Step 2: Convert to fraction form
    20,204.54/27,882.15 = 11,820.86/x
  3. Step 3: Cross multiply
    20,204.54x = 27,882.15 × 11,820.86
  4. Step 4: Simplify right side
    20,204.54x = 329,590,991.65
  5. Step 5: Solve for x
    x = 329,590,991.65/20,204.54
  6. Step 6: Final answer
    x = 16,312.72

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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.