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Finding the Fourth Proportional to 18,379,998.80, 27,528,007.80 and 10,821,726.80

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Solution

The fourth proportional to 18,379,998.80, 27,528,007.80 and 10,821,726.80 is: 16,207,867.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379,998.80 : 27,528,007.80 = 10,821,726.80 : x
  2. Step 2: Convert to fraction form
    18,379,998.80/27,528,007.80 = 10,821,726.80/x
  3. Step 3: Cross multiply
    18,379,998.80x = 27,528,007.80 × 10,821,726.80
  4. Step 4: Simplify right side
    18,379,998.80x = 297,900,579,759,869.06
  5. Step 5: Solve for x
    x = 297,900,579,759,869.06/18,379,998.80
  6. Step 6: Final answer
    x = 16,207,867.20

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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.