Home / 20,375.29-28,117.97-11,883.27

Finding the Fourth Proportional to 20,375.29, 28,117.97 and 11,883.27

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Solution

The fourth proportional to 20,375.29, 28,117.97 and 11,883.27 is: 16,398.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.29 : 28,117.97 = 11,883.27 : x
  2. Step 2: Convert to fraction form
    20,375.29/28,117.97 = 11,883.27/x
  3. Step 3: Cross multiply
    20,375.29x = 28,117.97 × 11,883.27
  4. Step 4: Simplify right side
    20,375.29x = 334,133,369.95
  5. Step 5: Solve for x
    x = 334,133,369.95/20,375.29
  6. Step 6: Final answer
    x = 16,398.95

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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.