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Finding the Fourth Proportional to 17,166.78, 25,752.60 and 7,806.78

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Solution

The fourth proportional to 17,166.78, 25,752.60 and 7,806.78 is: 11,711.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,166.78 : 25,752.60 = 7,806.78 : x
  2. Step 2: Convert to fraction form
    17,166.78/25,752.60 = 7,806.78/x
  3. Step 3: Cross multiply
    17,166.78x = 25,752.60 × 7,806.78
  4. Step 4: Simplify right side
    17,166.78x = 201,044,882.63
  5. Step 5: Solve for x
    x = 201,044,882.63/17,166.78
  6. Step 6: Final answer
    x = 11,711.28

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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.