Home / 15,931.25-21,991.08-11,963.82

Finding the Fourth Proportional to 15,931.25, 21,991.08 and 11,963.82

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Solution

The fourth proportional to 15,931.25, 21,991.08 and 11,963.82 is: 16,514.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931.25 : 21,991.08 = 11,963.82 : x
  2. Step 2: Convert to fraction form
    15,931.25/21,991.08 = 11,963.82/x
  3. Step 3: Cross multiply
    15,931.25x = 21,991.08 × 11,963.82
  4. Step 4: Simplify right side
    15,931.25x = 263,097,322.73
  5. Step 5: Solve for x
    x = 263,097,322.73/15,931.25
  6. Step 6: Final answer
    x = 16,514.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.