Home / 12,159.26-16,778.77-6,855.38

Finding the Fourth Proportional to 12,159.26, 16,778.77 and 6,855.38

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Solution

The fourth proportional to 12,159.26, 16,778.77 and 6,855.38 is: 9,459.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.26 : 16,778.77 = 6,855.38 : x
  2. Step 2: Convert to fraction form
    12,159.26/16,778.77 = 6,855.38/x
  3. Step 3: Cross multiply
    12,159.26x = 16,778.77 × 6,855.38
  4. Step 4: Simplify right side
    12,159.26x = 115,024,743.25
  5. Step 5: Solve for x
    x = 115,024,743.25/12,159.26
  6. Step 6: Final answer
    x = 9,459.85

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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.