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Finding the Fourth Proportional to 17,390.84, 26,085.20 and 8,502.75

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Solution

The fourth proportional to 17,390.84, 26,085.20 and 8,502.75 is: 12,753.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,390.84 : 26,085.20 = 8,502.75 : x
  2. Step 2: Convert to fraction form
    17,390.84/26,085.20 = 8,502.75/x
  3. Step 3: Cross multiply
    17,390.84x = 26,085.20 × 8,502.75
  4. Step 4: Simplify right side
    17,390.84x = 221,795,891.79
  5. Step 5: Solve for x
    x = 221,795,891.79/17,390.84
  6. Step 6: Final answer
    x = 12,753.61

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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.