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Finding the Fourth Proportional to 11,281,318.80, 16,921,978.20 and 10,840,419.60

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Solution

The fourth proportional to 11,281,318.80, 16,921,978.20 and 10,840,419.60 is: 16,260,629.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,281,318.80 : 16,921,978.20 = 10,840,419.60 : x
  2. Step 2: Convert to fraction form
    11,281,318.80/16,921,978.20 = 10,840,419.60/x
  3. Step 3: Cross multiply
    11,281,318.80x = 16,921,978.20 × 10,840,419.60
  4. Step 4: Simplify right side
    11,281,318.80x = 183,441,344,150,052.72
  5. Step 5: Solve for x
    x = 183,441,344,150,052.72/11,281,318.80
  6. Step 6: Final answer
    x = 16,260,629.40

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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.