Home / 20,487,987.70-30,731,981.55-10,922,049.70

Finding the Fourth Proportional to 20,487,987.70, 30,731,981.55 and 10,922,049.70

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Solution

The fourth proportional to 20,487,987.70, 30,731,981.55 and 10,922,049.70 is: 16,383,074.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487,987.70 : 30,731,981.55 = 10,922,049.70 : x
  2. Step 2: Convert to fraction form
    20,487,987.70/30,731,981.55 = 10,922,049.70/x
  3. Step 3: Cross multiply
    20,487,987.70x = 30,731,981.55 × 10,922,049.70
  4. Step 4: Simplify right side
    20,487,987.70x = 335,656,229,868,583
  5. Step 5: Solve for x
    x = 335,656,229,868,583/20,487,987.70
  6. Step 6: Final answer
    x = 16,383,074.55

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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.