Home / 12,391.85-17,100.76-6,726.59

Finding the Fourth Proportional to 12,391.85, 17,100.76 and 6,726.59

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Solution

The fourth proportional to 12,391.85, 17,100.76 and 6,726.59 is: 9,282.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.85 : 17,100.76 = 6,726.59 : x
  2. Step 2: Convert to fraction form
    12,391.85/17,100.76 = 6,726.59/x
  3. Step 3: Cross multiply
    12,391.85x = 17,100.76 × 6,726.59
  4. Step 4: Simplify right side
    12,391.85x = 115,029,879.77
  5. Step 5: Solve for x
    x = 115,029,879.77/12,391.85
  6. Step 6: Final answer
    x = 9,282.71

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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.