Home / 20,313,914.92-30,479,419.94-12,643,974.70

Finding the Fourth Proportional to 20,313,914.92, 30,479,419.94 and 12,643,974.70

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Solution

The fourth proportional to 20,313,914.92, 30,479,419.94 and 12,643,974.70 is: 18,971,282.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313,914.92 : 30,479,419.94 = 12,643,974.70 : x
  2. Step 2: Convert to fraction form
    20,313,914.92/30,479,419.94 = 12,643,974.70/x
  3. Step 3: Cross multiply
    20,313,914.92x = 30,479,419.94 × 12,643,974.70
  4. Step 4: Simplify right side
    20,313,914.92x = 385,381,014,452,617.06
  5. Step 5: Solve for x
    x = 385,381,014,452,617.06/20,313,914.92
  6. Step 6: Final answer
    x = 18,971,282.30

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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.