Home / 12,765,614.40-19,162,418.40-7,978,708.80

Finding the Fourth Proportional to 12,765,614.40, 19,162,418.40 and 7,978,708.80

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Solution

The fourth proportional to 12,765,614.40, 19,162,418.40 and 7,978,708.80 is: 11,976,811.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,765,614.40 : 19,162,418.40 = 7,978,708.80 : x
  2. Step 2: Convert to fraction form
    12,765,614.40/19,162,418.40 = 7,978,708.80/x
  3. Step 3: Cross multiply
    12,765,614.40x = 19,162,418.40 × 7,978,708.80
  4. Step 4: Simplify right side
    12,765,614.40x = 152,891,356,317,361.91
  5. Step 5: Solve for x
    x = 152,891,356,317,361.91/12,765,614.40
  6. Step 6: Final answer
    x = 11,976,811.42

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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.