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Finding the Fourth Proportional to 19,318,704.60, 28,978,056.90 and 9,241,008.60

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Solution

The fourth proportional to 19,318,704.60, 28,978,056.90 and 9,241,008.60 is: 13,861,512.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,318,704.60 : 28,978,056.90 = 9,241,008.60 : x
  2. Step 2: Convert to fraction form
    19,318,704.60/28,978,056.90 = 9,241,008.60/x
  3. Step 3: Cross multiply
    19,318,704.60x = 28,978,056.90 × 9,241,008.60
  4. Step 4: Simplify right side
    19,318,704.60x = 267,786,473,024,189.31
  5. Step 5: Solve for x
    x = 267,786,473,024,189.31/19,318,704.60
  6. Step 6: Final answer
    x = 13,861,512.90

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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.