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Finding the Fourth Proportional to 11,418.65, 17,125.95 and 3,099.32

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Solution

The fourth proportional to 11,418.65, 17,125.95 and 3,099.32 is: 4,648.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,418.65 : 17,125.95 = 3,099.32 : x
  2. Step 2: Convert to fraction form
    11,418.65/17,125.95 = 3,099.32/x
  3. Step 3: Cross multiply
    11,418.65x = 17,125.95 × 3,099.32
  4. Step 4: Simplify right side
    11,418.65x = 53,078,725.35
  5. Step 5: Solve for x
    x = 53,078,725.35/11,418.65
  6. Step 6: Final answer
    x = 4,648.42

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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.