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Finding the Fourth Proportional to 18,451,019.20, 27,676,528.80 and 4,987,847.20

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Solution

The fourth proportional to 18,451,019.20, 27,676,528.80 and 4,987,847.20 is: 7,481,770.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,451,019.20 : 27,676,528.80 = 4,987,847.20 : x
  2. Step 2: Convert to fraction form
    18,451,019.20/27,676,528.80 = 4,987,847.20/x
  3. Step 3: Cross multiply
    18,451,019.20x = 27,676,528.80 × 4,987,847.20
  4. Step 4: Simplify right side
    18,451,019.20x = 138,046,296,680,799.38
  5. Step 5: Solve for x
    x = 138,046,296,680,799.38/18,451,019.20
  6. Step 6: Final answer
    x = 7,481,770.80

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1.5x scale

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.