Home / 12,917.13-17,827.49-7,175.89

Finding the Fourth Proportional to 12,917.13, 17,827.49 and 7,175.89

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Solution

The fourth proportional to 12,917.13, 17,827.49 and 7,175.89 is: 9,903.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917.13 : 17,827.49 = 7,175.89 : x
  2. Step 2: Convert to fraction form
    12,917.13/17,827.49 = 7,175.89/x
  3. Step 3: Cross multiply
    12,917.13x = 17,827.49 × 7,175.89
  4. Step 4: Simplify right side
    12,917.13x = 127,928,107.22
  5. Step 5: Solve for x
    x = 127,928,107.22/12,917.13
  6. Step 6: Final answer
    x = 9,903.76

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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.