Home / 20,074.14-27,702.53-11,121.78

Finding the Fourth Proportional to 20,074.14, 27,702.53 and 11,121.78

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Solution

The fourth proportional to 20,074.14, 27,702.53 and 11,121.78 is: 15,348.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,074.14 : 27,702.53 = 11,121.78 : x
  2. Step 2: Convert to fraction form
    20,074.14/27,702.53 = 11,121.78/x
  3. Step 3: Cross multiply
    20,074.14x = 27,702.53 × 11,121.78
  4. Step 4: Simplify right side
    20,074.14x = 308,101,444.10
  5. Step 5: Solve for x
    x = 308,101,444.10/20,074.14
  6. Step 6: Final answer
    x = 15,348.18

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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.