Home / 12,521.44-17,279.61-6,778.95

Finding the Fourth Proportional to 12,521.44, 17,279.61 and 6,778.95

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Solution

The fourth proportional to 12,521.44, 17,279.61 and 6,778.95 is: 9,354.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.44 : 17,279.61 = 6,778.95 : x
  2. Step 2: Convert to fraction form
    12,521.44/17,279.61 = 6,778.95/x
  3. Step 3: Cross multiply
    12,521.44x = 17,279.61 × 6,778.95
  4. Step 4: Simplify right side
    12,521.44x = 117,137,617.53
  5. Step 5: Solve for x
    x = 117,137,617.53/12,521.44
  6. Step 6: Final answer
    x = 9,354.97

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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.