Home / 11,329.60-15,618.40-8,180.80

Finding the Fourth Proportional to 11,329.60, 15,618.40 and 8,180.80

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Solution

The fourth proportional to 11,329.60, 15,618.40 and 8,180.80 is: 11,277.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,329.60 : 15,618.40 = 8,180.80 : x
  2. Step 2: Convert to fraction form
    11,329.60/15,618.40 = 8,180.80/x
  3. Step 3: Cross multiply
    11,329.60x = 15,618.40 × 8,180.80
  4. Step 4: Simplify right side
    11,329.60x = 127,771,006.72
  5. Step 5: Solve for x
    x = 127,771,006.72/11,329.60
  6. Step 6: Final answer
    x = 11,277.63

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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.