Home / 17,721.78-26,546.80-8,220.72

Finding the Fourth Proportional to 17,721.78, 26,546.80 and 8,220.72

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Solution

The fourth proportional to 17,721.78, 26,546.80 and 8,220.72 is: 12,314.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,721.78 : 26,546.80 = 8,220.72 : x
  2. Step 2: Convert to fraction form
    17,721.78/26,546.80 = 8,220.72/x
  3. Step 3: Cross multiply
    17,721.78x = 26,546.80 × 8,220.72
  4. Step 4: Simplify right side
    17,721.78x = 218,233,809.70
  5. Step 5: Solve for x
    x = 218,233,809.70/17,721.78
  6. Step 6: Final answer
    x = 12,314.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.