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Finding the Fourth Proportional to 11,465.96, 17,121.32 and 9,099.42

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Solution

The fourth proportional to 11,465.96, 17,121.32 and 9,099.42 is: 13,587.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,465.96 : 17,121.32 = 9,099.42 : x
  2. Step 2: Convert to fraction form
    11,465.96/17,121.32 = 9,099.42/x
  3. Step 3: Cross multiply
    11,465.96x = 17,121.32 × 9,099.42
  4. Step 4: Simplify right side
    11,465.96x = 155,794,081.63
  5. Step 5: Solve for x
    x = 155,794,081.63/11,465.96
  6. Step 6: Final answer
    x = 13,587.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.