Home / 21,318.93-31,957.74-11,963.43

Finding the Fourth Proportional to 21,318.93, 31,957.74 and 11,963.43

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Solution

The fourth proportional to 21,318.93, 31,957.74 and 11,963.43 is: 17,933.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.93 : 31,957.74 = 11,963.43 : x
  2. Step 2: Convert to fraction form
    21,318.93/31,957.74 = 11,963.43/x
  3. Step 3: Cross multiply
    21,318.93x = 31,957.74 × 11,963.43
  4. Step 4: Simplify right side
    21,318.93x = 382,324,185.45
  5. Step 5: Solve for x
    x = 382,324,185.45/21,318.93
  6. Step 6: Final answer
    x = 17,933.55

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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.