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Finding the Fourth Proportional to 12,882.99, 17,748.18 and 12,107.97

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Solution

The fourth proportional to 12,882.99, 17,748.18 and 12,107.97 is: 16,680.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,882.99 : 17,748.18 = 12,107.97 : x
  2. Step 2: Convert to fraction form
    12,882.99/17,748.18 = 12,107.97/x
  3. Step 3: Cross multiply
    12,882.99x = 17,748.18 × 12,107.97
  4. Step 4: Simplify right side
    12,882.99x = 214,894,430.99
  5. Step 5: Solve for x
    x = 214,894,430.99/12,882.99
  6. Step 6: Final answer
    x = 16,680.48

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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.