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Finding the Fourth Proportional to 12,799.45, 17,662 and 7,696.45

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Solution

The fourth proportional to 12,799.45, 17,662 and 7,696.45 is: 10,620.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,799.45 : 17,662 = 7,696.45 : x
  2. Step 2: Convert to fraction form
    12,799.45/17,662 = 7,696.45/x
  3. Step 3: Cross multiply
    12,799.45x = 17,662 × 7,696.45
  4. Step 4: Simplify right side
    12,799.45x = 135,934,699.90
  5. Step 5: Solve for x
    x = 135,934,699.90/12,799.45
  6. Step 6: Final answer
    x = 10,620.35

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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.