Home / 20,279,137.23-30,271,189.89-18,780,473.61

Finding the Fourth Proportional to 20,279,137.23, 30,271,189.89 and 18,780,473.61

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Solution

The fourth proportional to 20,279,137.23, 30,271,189.89 and 18,780,473.61 is: 28,034,096.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,279,137.23 : 30,271,189.89 = 18,780,473.61 : x
  2. Step 2: Convert to fraction form
    20,279,137.23/30,271,189.89 = 18,780,473.61/x
  3. Step 3: Cross multiply
    20,279,137.23x = 30,271,189.89 × 18,780,473.61
  4. Step 4: Simplify right side
    20,279,137.23x = 568,507,282,872,443.75
  5. Step 5: Solve for x
    x = 568,507,282,872,443.75/20,279,137.23
  6. Step 6: Final answer
    x = 28,034,096.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.