Home / 20,899,825.61-28,842,115.89-11,481,013.72

Finding the Fourth Proportional to 20,899,825.61, 28,842,115.89 and 11,481,013.72

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Solution

The fourth proportional to 20,899,825.61, 28,842,115.89 and 11,481,013.72 is: 15,843,994.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899,825.61 : 28,842,115.89 = 11,481,013.72 : x
  2. Step 2: Convert to fraction form
    20,899,825.61/28,842,115.89 = 11,481,013.72/x
  3. Step 3: Cross multiply
    20,899,825.61x = 28,842,115.89 × 11,481,013.72
  4. Step 4: Simplify right side
    20,899,825.61x = 331,136,728,377,930.25
  5. Step 5: Solve for x
    x = 331,136,728,377,930.25/20,899,825.61
  6. Step 6: Final answer
    x = 15,843,994.80

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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.