Home / 18,211,657.20-27,318,868.20-5,431,164.40

Finding the Fourth Proportional to 18,211,657.20, 27,318,868.20 and 5,431,164.40

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Solution

The fourth proportional to 18,211,657.20, 27,318,868.20 and 5,431,164.40 is: 8,147,158.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211,657.20 : 27,318,868.20 = 5,431,164.40 : x
  2. Step 2: Convert to fraction form
    18,211,657.20/27,318,868.20 = 5,431,164.40/x
  3. Step 3: Cross multiply
    18,211,657.20x = 27,318,868.20 × 5,431,164.40
  4. Step 4: Simplify right side
    18,211,657.20x = 148,373,264,416,132.09
  5. Step 5: Solve for x
    x = 148,373,264,416,132.09/18,211,657.20
  6. Step 6: Final answer
    x = 8,147,158.87

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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.