Home / 20,106.78-27,747.52-11,154.86

Finding the Fourth Proportional to 20,106.78, 27,747.52 and 11,154.86

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Solution

The fourth proportional to 20,106.78, 27,747.52 and 11,154.86 is: 15,393.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.78 : 27,747.52 = 11,154.86 : x
  2. Step 2: Convert to fraction form
    20,106.78/27,747.52 = 11,154.86/x
  3. Step 3: Cross multiply
    20,106.78x = 27,747.52 × 11,154.86
  4. Step 4: Simplify right side
    20,106.78x = 309,519,700.95
  5. Step 5: Solve for x
    x = 309,519,700.95/20,106.78
  6. Step 6: Final answer
    x = 15,393.80

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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.