Home / 20,077.12-27,704.17-11,122.41

Finding the Fourth Proportional to 20,077.12, 27,704.17 and 11,122.41

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Solution

The fourth proportional to 20,077.12, 27,704.17 and 11,122.41 is: 15,347.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.12 : 27,704.17 = 11,122.41 : x
  2. Step 2: Convert to fraction form
    20,077.12/27,704.17 = 11,122.41/x
  3. Step 3: Cross multiply
    20,077.12x = 27,704.17 × 11,122.41
  4. Step 4: Simplify right side
    20,077.12x = 308,137,137.45
  5. Step 5: Solve for x
    x = 308,137,137.45/20,077.12
  6. Step 6: Final answer
    x = 15,347.68

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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.