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Finding the Fourth Proportional to 17,665.20, 26,512.20 and 17,089.20

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Solution

The fourth proportional to 17,665.20, 26,512.20 and 17,089.20 is: 25,647.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,665.20 : 26,512.20 = 17,089.20 : x
  2. Step 2: Convert to fraction form
    17,665.20/26,512.20 = 17,089.20/x
  3. Step 3: Cross multiply
    17,665.20x = 26,512.20 × 17,089.20
  4. Step 4: Simplify right side
    17,665.20x = 453,072,288.24
  5. Step 5: Solve for x
    x = 453,072,288.24/17,665.20
  6. Step 6: Final answer
    x = 25,647.73

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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.