Home / 21,297.06-31,921.70-7,243.97

Finding the Fourth Proportional to 21,297.06, 31,921.70 and 7,243.97

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Solution

The fourth proportional to 21,297.06, 31,921.70 and 7,243.97 is: 10,857.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297.06 : 31,921.70 = 7,243.97 : x
  2. Step 2: Convert to fraction form
    21,297.06/31,921.70 = 7,243.97/x
  3. Step 3: Cross multiply
    21,297.06x = 31,921.70 × 7,243.97
  4. Step 4: Simplify right side
    21,297.06x = 231,239,641.32
  5. Step 5: Solve for x
    x = 231,239,641.32/21,297.06
  6. Step 6: Final answer
    x = 10,857.82

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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.