Home / 12,178.11-16,799.60-7,396.78

Finding the Fourth Proportional to 12,178.11, 16,799.60 and 7,396.78

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Solution

The fourth proportional to 12,178.11, 16,799.60 and 7,396.78 is: 10,203.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.11 : 16,799.60 = 7,396.78 : x
  2. Step 2: Convert to fraction form
    12,178.11/16,799.60 = 7,396.78/x
  3. Step 3: Cross multiply
    12,178.11x = 16,799.60 × 7,396.78
  4. Step 4: Simplify right side
    12,178.11x = 124,262,968.80
  5. Step 5: Solve for x
    x = 124,262,968.80/12,178.11
  6. Step 6: Final answer
    x = 10,203.80

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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.