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Finding the Fourth Proportional to 17,089.84, 25,608.84 and 12,686.68

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Solution

The fourth proportional to 17,089.84, 25,608.84 and 12,686.68 is: 19,010.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,089.84 : 25,608.84 = 12,686.68 : x
  2. Step 2: Convert to fraction form
    17,089.84/25,608.84 = 12,686.68/x
  3. Step 3: Cross multiply
    17,089.84x = 25,608.84 × 12,686.68
  4. Step 4: Simplify right side
    17,089.84x = 324,891,158.25
  5. Step 5: Solve for x
    x = 324,891,158.25/17,089.84
  6. Step 6: Final answer
    x = 19,010.78

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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.