Home / 21,160.44-31,786.02-12,844.58

Finding the Fourth Proportional to 21,160.44, 31,786.02 and 12,844.58

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Solution

The fourth proportional to 21,160.44, 31,786.02 and 12,844.58 is: 19,294.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.44 : 31,786.02 = 12,844.58 : x
  2. Step 2: Convert to fraction form
    21,160.44/31,786.02 = 12,844.58/x
  3. Step 3: Cross multiply
    21,160.44x = 31,786.02 × 12,844.58
  4. Step 4: Simplify right side
    21,160.44x = 408,277,917.84
  5. Step 5: Solve for x
    x = 408,277,917.84/21,160.44
  6. Step 6: Final answer
    x = 19,294.40

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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.