Home / 13,481.82-18,605.43-7,816.47

Finding the Fourth Proportional to 13,481.82, 18,605.43 and 7,816.47

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Solution

The fourth proportional to 13,481.82, 18,605.43 and 7,816.47 is: 10,787.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.82 : 18,605.43 = 7,816.47 : x
  2. Step 2: Convert to fraction form
    13,481.82/18,605.43 = 7,816.47/x
  3. Step 3: Cross multiply
    13,481.82x = 18,605.43 × 7,816.47
  4. Step 4: Simplify right side
    13,481.82x = 145,428,785.43
  5. Step 5: Solve for x
    x = 145,428,785.43/13,481.82
  6. Step 6: Final answer
    x = 10,787.03

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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.