Home / 20,074.27-27,702.71-11,121.91

Finding the Fourth Proportional to 20,074.27, 27,702.71 and 11,121.91

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Solution

The fourth proportional to 20,074.27, 27,702.71 and 11,121.91 is: 15,348.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,074.27 : 27,702.71 = 11,121.91 : x
  2. Step 2: Convert to fraction form
    20,074.27/27,702.71 = 11,121.91/x
  3. Step 3: Cross multiply
    20,074.27x = 27,702.71 × 11,121.91
  4. Step 4: Simplify right side
    20,074.27x = 308,106,853.25
  5. Step 5: Solve for x
    x = 308,106,853.25/20,074.27
  6. Step 6: Final answer
    x = 15,348.35

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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.