Home / 18,589,781.40-27,884,672.10-7,819,243.80

Finding the Fourth Proportional to 18,589,781.40, 27,884,672.10 and 7,819,243.80

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Solution

The fourth proportional to 18,589,781.40, 27,884,672.10 and 7,819,243.80 is: 11,728,865.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589,781.40 : 27,884,672.10 = 7,819,243.80 : x
  2. Step 2: Convert to fraction form
    18,589,781.40/27,884,672.10 = 7,819,243.80/x
  3. Step 3: Cross multiply
    18,589,781.40x = 27,884,672.10 × 7,819,243.80
  4. Step 4: Simplify right side
    18,589,781.40x = 218,037,049,432,958
  5. Step 5: Solve for x
    x = 218,037,049,432,958/18,589,781.40
  6. Step 6: Final answer
    x = 11,728,865.70

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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.