Home / 21,270.22-31,902.59-7,229.68

Finding the Fourth Proportional to 21,270.22, 31,902.59 and 7,229.68

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Solution

The fourth proportional to 21,270.22, 31,902.59 and 7,229.68 is: 10,843.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.22 : 31,902.59 = 7,229.68 : x
  2. Step 2: Convert to fraction form
    21,270.22/31,902.59 = 7,229.68/x
  3. Step 3: Cross multiply
    21,270.22x = 31,902.59 × 7,229.68
  4. Step 4: Simplify right side
    21,270.22x = 230,645,455.19
  5. Step 5: Solve for x
    x = 230,645,455.19/21,270.22
  6. Step 6: Final answer
    x = 10,843.59

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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.