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Finding the Fourth Proportional to 12,299.90, 18,447.92 and 4,506.90

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Solution

The fourth proportional to 12,299.90, 18,447.92 and 4,506.90 is: 6,759.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,299.90 : 18,447.92 = 4,506.90 : x
  2. Step 2: Convert to fraction form
    12,299.90/18,447.92 = 4,506.90/x
  3. Step 3: Cross multiply
    12,299.90x = 18,447.92 × 4,506.90
  4. Step 4: Simplify right side
    12,299.90x = 83,142,930.65
  5. Step 5: Solve for x
    x = 83,142,930.65/12,299.90
  6. Step 6: Final answer
    x = 6,759.64

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1.5x scale

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.