Home / 31,236.36-46,821.90-13,691.40

Finding the Fourth Proportional to 31,236.36, 46,821.90 and 13,691.40

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Solution

The fourth proportional to 31,236.36, 46,821.90 and 13,691.40 is: 20,522.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,236.36 : 46,821.90 = 13,691.40 : x
  2. Step 2: Convert to fraction form
    31,236.36/46,821.90 = 13,691.40/x
  3. Step 3: Cross multiply
    31,236.36x = 46,821.90 × 13,691.40
  4. Step 4: Simplify right side
    31,236.36x = 641,057,361.66
  5. Step 5: Solve for x
    x = 641,057,361.66/31,236.36
  6. Step 6: Final answer
    x = 20,522.79

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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.