Home / 19,313,121.80-28,991,801.10-11,339,438.60

Finding the Fourth Proportional to 19,313,121.80, 28,991,801.10 and 11,339,438.60

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Solution

The fourth proportional to 19,313,121.80, 28,991,801.10 and 11,339,438.60 is: 17,022,144.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,313,121.80 : 28,991,801.10 = 11,339,438.60 : x
  2. Step 2: Convert to fraction form
    19,313,121.80/28,991,801.10 = 11,339,438.60/x
  3. Step 3: Cross multiply
    19,313,121.80x = 28,991,801.10 × 11,339,438.60
  4. Step 4: Simplify right side
    19,313,121.80x = 328,750,748,476,862.44
  5. Step 5: Solve for x
    x = 328,750,748,476,862.44/19,313,121.80
  6. Step 6: Final answer
    x = 17,022,144.42

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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.