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Finding the Fourth Proportional to 17,391.43, 26,070 and 11,133.64

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Solution

The fourth proportional to 17,391.43, 26,070 and 11,133.64 is: 16,689.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,391.43 : 26,070 = 11,133.64 : x
  2. Step 2: Convert to fraction form
    17,391.43/26,070 = 11,133.64/x
  3. Step 3: Cross multiply
    17,391.43x = 26,070 × 11,133.64
  4. Step 4: Simplify right side
    17,391.43x = 290,253,994.80
  5. Step 5: Solve for x
    x = 290,253,994.80/17,391.43
  6. Step 6: Final answer
    x = 16,689.48

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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.