Home / 12,999,132.82-17,938,584.22-7,197,789.97

Finding the Fourth Proportional to 12,999,132.82, 17,938,584.22 and 7,197,789.97

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Solution

The fourth proportional to 12,999,132.82, 17,938,584.22 and 7,197,789.97 is: 9,932,828.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999,132.82 : 17,938,584.22 = 7,197,789.97 : x
  2. Step 2: Convert to fraction form
    12,999,132.82/17,938,584.22 = 7,197,789.97/x
  3. Step 3: Cross multiply
    12,999,132.82x = 17,938,584.22 × 7,197,789.97
  4. Step 4: Simplify right side
    12,999,132.82x = 129,118,161,574,716.27
  5. Step 5: Solve for x
    x = 129,118,161,574,716.27/12,999,132.82
  6. Step 6: Final answer
    x = 9,932,828.86

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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.