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Finding the Fourth Proportional to 34,808.57, 52,212.80 and 12,621.89

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Solution

The fourth proportional to 34,808.57, 52,212.80 and 12,621.89 is: 18,932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,808.57 : 52,212.80 = 12,621.89 : x
  2. Step 2: Convert to fraction form
    34,808.57/52,212.80 = 12,621.89/x
  3. Step 3: Cross multiply
    34,808.57x = 52,212.80 × 12,621.89
  4. Step 4: Simplify right side
    34,808.57x = 659,024,380.28
  5. Step 5: Solve for x
    x = 659,024,380.28/34,808.57
  6. Step 6: Final answer
    x = 18,932.82

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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.