Home / 20,512.89-28,301.49-12,546.81

Finding the Fourth Proportional to 20,512.89, 28,301.49 and 12,546.81

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Solution

The fourth proportional to 20,512.89, 28,301.49 and 12,546.81 is: 17,310.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.89 : 28,301.49 = 12,546.81 : x
  2. Step 2: Convert to fraction form
    20,512.89/28,301.49 = 12,546.81/x
  3. Step 3: Cross multiply
    20,512.89x = 28,301.49 × 12,546.81
  4. Step 4: Simplify right side
    20,512.89x = 355,093,417.75
  5. Step 5: Solve for x
    x = 355,093,417.75/20,512.89
  6. Step 6: Final answer
    x = 17,310.75

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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.