Home / 12,766.21-17,616.80-7,387.80

Finding the Fourth Proportional to 12,766.21, 17,616.80 and 7,387.80

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Solution

The fourth proportional to 12,766.21, 17,616.80 and 7,387.80 is: 10,194.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,766.21 : 17,616.80 = 7,387.80 : x
  2. Step 2: Convert to fraction form
    12,766.21/17,616.80 = 7,387.80/x
  3. Step 3: Cross multiply
    12,766.21x = 17,616.80 × 7,387.80
  4. Step 4: Simplify right side
    12,766.21x = 130,149,395.04
  5. Step 5: Solve for x
    x = 130,149,395.04/12,766.21
  6. Step 6: Final answer
    x = 10,194.83

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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.