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Finding the Fourth Proportional to 20,108.96, 30,153.87 and 8,260.89

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Solution

The fourth proportional to 20,108.96, 30,153.87 and 8,260.89 is: 12,387.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.96 : 30,153.87 = 8,260.89 : x
  2. Step 2: Convert to fraction form
    20,108.96/30,153.87 = 8,260.89/x
  3. Step 3: Cross multiply
    20,108.96x = 30,153.87 × 8,260.89
  4. Step 4: Simplify right side
    20,108.96x = 249,097,690.07
  5. Step 5: Solve for x
    x = 249,097,690.07/20,108.96
  6. Step 6: Final answer
    x = 12,387.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.