Home / 20,111,857.70-30,167,786.55-18,852,145.70

Finding the Fourth Proportional to 20,111,857.70, 30,167,786.55 and 18,852,145.70

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Solution

The fourth proportional to 20,111,857.70, 30,167,786.55 and 18,852,145.70 is: 28,278,218.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111,857.70 : 30,167,786.55 = 18,852,145.70 : x
  2. Step 2: Convert to fraction form
    20,111,857.70/30,167,786.55 = 18,852,145.70/x
  3. Step 3: Cross multiply
    20,111,857.70x = 30,167,786.55 × 18,852,145.70
  4. Step 4: Simplify right side
    20,111,857.70x = 568,727,507,487,100.38
  5. Step 5: Solve for x
    x = 568,727,507,487,100.38/20,111,857.70
  6. Step 6: Final answer
    x = 28,278,218.55

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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.