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Finding the Fourth Proportional to 18,538,000.80, 27,765,010.80 and 10,979,728.80

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Solution

The fourth proportional to 18,538,000.80, 27,765,010.80 and 10,979,728.80 is: 16,444,723.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,538,000.80 : 27,765,010.80 = 10,979,728.80 : x
  2. Step 2: Convert to fraction form
    18,538,000.80/27,765,010.80 = 10,979,728.80/x
  3. Step 3: Cross multiply
    18,538,000.80x = 27,765,010.80 × 10,979,728.80
  4. Step 4: Simplify right side
    18,538,000.80x = 304,852,288,713,071.06
  5. Step 5: Solve for x
    x = 304,852,288,713,071.06/18,538,000.80
  6. Step 6: Final answer
    x = 16,444,723.03

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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.