Home / 20,806,164.42-31,221,576-11,591,849.39

Finding the Fourth Proportional to 20,806,164.42, 31,221,576 and 11,591,849.39

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Solution

The fourth proportional to 20,806,164.42, 31,221,576 and 11,591,849.39 is: 17,394,643.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806,164.42 : 31,221,576 = 11,591,849.39 : x
  2. Step 2: Convert to fraction form
    20,806,164.42/31,221,576 = 11,591,849.39/x
  3. Step 3: Cross multiply
    20,806,164.42x = 31,221,576 × 11,591,849.39
  4. Step 4: Simplify right side
    20,806,164.42x = 361,915,806,554,330.75
  5. Step 5: Solve for x
    x = 361,915,806,554,330.75/20,806,164.42
  6. Step 6: Final answer
    x = 17,394,643.21

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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.