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Finding the Fourth Proportional to 12,680.52, 17,503.92 and 11,351.84

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Solution

The fourth proportional to 12,680.52, 17,503.92 and 11,351.84 is: 15,669.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.52 : 17,503.92 = 11,351.84 : x
  2. Step 2: Convert to fraction form
    12,680.52/17,503.92 = 11,351.84/x
  3. Step 3: Cross multiply
    12,680.52x = 17,503.92 × 11,351.84
  4. Step 4: Simplify right side
    12,680.52x = 198,701,699.21
  5. Step 5: Solve for x
    x = 198,701,699.21/12,680.52
  6. Step 6: Final answer
    x = 15,669.84

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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.