Home / 21,326.42-31,995.30-7,286.42

Finding the Fourth Proportional to 21,326.42, 31,995.30 and 7,286.42

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Solution

The fourth proportional to 21,326.42, 31,995.30 and 7,286.42 is: 10,931.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.42 : 31,995.30 = 7,286.42 : x
  2. Step 2: Convert to fraction form
    21,326.42/31,995.30 = 7,286.42/x
  3. Step 3: Cross multiply
    21,326.42x = 31,995.30 × 7,286.42
  4. Step 4: Simplify right side
    21,326.42x = 233,131,273.81
  5. Step 5: Solve for x
    x = 233,131,273.81/21,326.42
  6. Step 6: Final answer
    x = 10,931.57

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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.