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Finding the Fourth Proportional to 12,340, 18,504.52 and 3,572.88

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Solution

The fourth proportional to 12,340, 18,504.52 and 3,572.88 is: 5,357.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,340 : 18,504.52 = 3,572.88 : x
  2. Step 2: Convert to fraction form
    12,340/18,504.52 = 3,572.88/x
  3. Step 3: Cross multiply
    12,340x = 18,504.52 × 3,572.88
  4. Step 4: Simplify right side
    12,340x = 66,114,429.42
  5. Step 5: Solve for x
    x = 66,114,429.42/12,340
  6. Step 6: Final answer
    x = 5,357.73

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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.