Home / 12,218.60-16,869.66-7,743.80

Finding the Fourth Proportional to 12,218.60, 16,869.66 and 7,743.80

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Solution

The fourth proportional to 12,218.60, 16,869.66 and 7,743.80 is: 10,691.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.60 : 16,869.66 = 7,743.80 : x
  2. Step 2: Convert to fraction form
    12,218.60/16,869.66 = 7,743.80/x
  3. Step 3: Cross multiply
    12,218.60x = 16,869.66 × 7,743.80
  4. Step 4: Simplify right side
    12,218.60x = 130,635,273.11
  5. Step 5: Solve for x
    x = 130,635,273.11/12,218.60
  6. Step 6: Final answer
    x = 10,691.51

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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.