Home / 20,548,378.89-28,355,202.23-11,380,824.81

Finding the Fourth Proportional to 20,548,378.89, 28,355,202.23 and 11,380,824.81

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Solution

The fourth proportional to 20,548,378.89, 28,355,202.23 and 11,380,824.81 is: 15,704,673.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548,378.89 : 28,355,202.23 = 11,380,824.81 : x
  2. Step 2: Convert to fraction form
    20,548,378.89/28,355,202.23 = 11,380,824.81/x
  3. Step 3: Cross multiply
    20,548,378.89x = 28,355,202.23 × 11,380,824.81
  4. Step 4: Simplify right side
    20,548,378.89x = 322,705,588,974,847.25
  5. Step 5: Solve for x
    x = 322,705,588,974,847.25/20,548,378.89
  6. Step 6: Final answer
    x = 15,704,673.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.