Home / 20,074.08-27,702.45-11,121.72

Finding the Fourth Proportional to 20,074.08, 27,702.45 and 11,121.72

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Solution

The fourth proportional to 20,074.08, 27,702.45 and 11,121.72 is: 15,348.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,074.08 : 27,702.45 = 11,121.72 : x
  2. Step 2: Convert to fraction form
    20,074.08/27,702.45 = 11,121.72/x
  3. Step 3: Cross multiply
    20,074.08x = 27,702.45 × 11,121.72
  4. Step 4: Simplify right side
    20,074.08x = 308,098,864.41
  5. Step 5: Solve for x
    x = 308,098,864.41/20,074.08
  6. Step 6: Final answer
    x = 15,348.10

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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.