Home / 21,311.64-31,968.92-7,268

Finding the Fourth Proportional to 21,311.64, 31,968.92 and 7,268

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Solution

The fourth proportional to 21,311.64, 31,968.92 and 7,268 is: 10,902.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.64 : 31,968.92 = 7,268 : x
  2. Step 2: Convert to fraction form
    21,311.64/31,968.92 = 7,268/x
  3. Step 3: Cross multiply
    21,311.64x = 31,968.92 × 7,268
  4. Step 4: Simplify right side
    21,311.64x = 232,350,110.56
  5. Step 5: Solve for x
    x = 232,350,110.56/21,311.64
  6. Step 6: Final answer
    x = 10,902.50

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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.