Home / 13,684.97-18,884.82-7,716.56

Finding the Fourth Proportional to 13,684.97, 18,884.82 and 7,716.56

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Solution

The fourth proportional to 13,684.97, 18,884.82 and 7,716.56 is: 10,648.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,684.97 : 18,884.82 = 7,716.56 : x
  2. Step 2: Convert to fraction form
    13,684.97/18,884.82 = 7,716.56/x
  3. Step 3: Cross multiply
    13,684.97x = 18,884.82 × 7,716.56
  4. Step 4: Simplify right side
    13,684.97x = 145,725,752.20
  5. Step 5: Solve for x
    x = 145,725,752.20/13,684.97
  6. Step 6: Final answer
    x = 10,648.60

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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.