Home / 12,882,551.20-17,777,721.36-7,081,208.80

Finding the Fourth Proportional to 12,882,551.20, 17,777,721.36 and 7,081,208.80

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Solution

The fourth proportional to 12,882,551.20, 17,777,721.36 and 7,081,208.80 is: 9,771,958.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,882,551.20 : 17,777,721.36 = 7,081,208.80 : x
  2. Step 2: Convert to fraction form
    12,882,551.20/17,777,721.36 = 7,081,208.80/x
  3. Step 3: Cross multiply
    12,882,551.20x = 17,777,721.36 × 7,081,208.80
  4. Step 4: Simplify right side
    12,882,551.20x = 125,887,756,938,379.95
  5. Step 5: Solve for x
    x = 125,887,756,938,379.95/12,882,551.20
  6. Step 6: Final answer
    x = 9,771,958.60

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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.