Home / 12,917.06-17,838.04-11,131.92

Finding the Fourth Proportional to 12,917.06, 17,838.04 and 11,131.92

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Solution

The fourth proportional to 12,917.06, 17,838.04 and 11,131.92 is: 15,372.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917.06 : 17,838.04 = 11,131.92 : x
  2. Step 2: Convert to fraction form
    12,917.06/17,838.04 = 11,131.92/x
  3. Step 3: Cross multiply
    12,917.06x = 17,838.04 × 11,131.92
  4. Step 4: Simplify right side
    12,917.06x = 198,571,578.58
  5. Step 5: Solve for x
    x = 198,571,578.58/12,917.06
  6. Step 6: Final answer
    x = 15,372.82

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1.5x scale

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.