Home / 21,310.29-31,974.66-11,438.04

Finding the Fourth Proportional to 21,310.29, 31,974.66 and 11,438.04

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Solution

The fourth proportional to 21,310.29, 31,974.66 and 11,438.04 is: 17,162.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.29 : 31,974.66 = 11,438.04 : x
  2. Step 2: Convert to fraction form
    21,310.29/31,974.66 = 11,438.04/x
  3. Step 3: Cross multiply
    21,310.29x = 31,974.66 × 11,438.04
  4. Step 4: Simplify right side
    21,310.29x = 365,727,440.07
  5. Step 5: Solve for x
    x = 365,727,440.07/21,310.29
  6. Step 6: Final answer
    x = 17,162.01

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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.