Home / 20,845,019.57-28,766,129.73-11,553,189.53

Finding the Fourth Proportional to 20,845,019.57, 28,766,129.73 and 11,553,189.53

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Solution

The fourth proportional to 20,845,019.57, 28,766,129.73 and 11,553,189.53 is: 15,943,403.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845,019.57 : 28,766,129.73 = 11,553,189.53 : x
  2. Step 2: Convert to fraction form
    20,845,019.57/28,766,129.73 = 11,553,189.53/x
  3. Step 3: Cross multiply
    20,845,019.57x = 28,766,129.73 × 11,553,189.53
  4. Step 4: Simplify right side
    20,845,019.57x = 332,340,548,815,257.69
  5. Step 5: Solve for x
    x = 332,340,548,815,257.69/20,845,019.57
  6. Step 6: Final answer
    x = 15,943,403.06

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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.