Home / 12,479,936.80-18,719,905.20-7,086,503.20

Finding the Fourth Proportional to 12,479,936.80, 18,719,905.20 and 7,086,503.20

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Solution

The fourth proportional to 12,479,936.80, 18,719,905.20 and 7,086,503.20 is: 10,629,754.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479,936.80 : 18,719,905.20 = 7,086,503.20 : x
  2. Step 2: Convert to fraction form
    12,479,936.80/18,719,905.20 = 7,086,503.20/x
  3. Step 3: Cross multiply
    12,479,936.80x = 18,719,905.20 × 7,086,503.20
  4. Step 4: Simplify right side
    12,479,936.80x = 132,658,668,103,496.64
  5. Step 5: Solve for x
    x = 132,658,668,103,496.64/12,479,936.80
  6. Step 6: Final answer
    x = 10,629,754.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.