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Finding the Fourth Proportional to 17,121, 23,628.90 and 9,669.48

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Solution

The fourth proportional to 17,121, 23,628.90 and 9,669.48 is: 13,344.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,121 : 23,628.90 = 9,669.48 : x
  2. Step 2: Convert to fraction form
    17,121/23,628.90 = 9,669.48/x
  3. Step 3: Cross multiply
    17,121x = 23,628.90 × 9,669.48
  4. Step 4: Simplify right side
    17,121x = 228,479,175.97
  5. Step 5: Solve for x
    x = 228,479,175.97/17,121
  6. Step 6: Final answer
    x = 13,344.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.