Home / 21,062.39-29,079.74-13,107.83

Finding the Fourth Proportional to 21,062.39, 29,079.74 and 13,107.83

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Solution

The fourth proportional to 21,062.39, 29,079.74 and 13,107.83 is: 18,097.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062.39 : 29,079.74 = 13,107.83 : x
  2. Step 2: Convert to fraction form
    21,062.39/29,079.74 = 13,107.83/x
  3. Step 3: Cross multiply
    21,062.39x = 29,079.74 × 13,107.83
  4. Step 4: Simplify right side
    21,062.39x = 381,172,175.74
  5. Step 5: Solve for x
    x = 381,172,175.74/21,062.39
  6. Step 6: Final answer
    x = 18,097.29

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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.