Home / 13,710.36-18,922.01-7,743.90

Finding the Fourth Proportional to 13,710.36, 18,922.01 and 7,743.90

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Solution

The fourth proportional to 13,710.36, 18,922.01 and 7,743.90 is: 10,687.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,710.36 : 18,922.01 = 7,743.90 : x
  2. Step 2: Convert to fraction form
    13,710.36/18,922.01 = 7,743.90/x
  3. Step 3: Cross multiply
    13,710.36x = 18,922.01 × 7,743.90
  4. Step 4: Simplify right side
    13,710.36x = 146,530,185.48
  5. Step 5: Solve for x
    x = 146,530,185.48/13,710.36
  6. Step 6: Final answer
    x = 10,687.55

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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.