Home / 13,859.81-20,789.73-3,864.16

Finding the Fourth Proportional to 13,859.81, 20,789.73 and 3,864.16

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Solution

The fourth proportional to 13,859.81, 20,789.73 and 3,864.16 is: 5,796.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.81 : 20,789.73 = 3,864.16 : x
  2. Step 2: Convert to fraction form
    13,859.81/20,789.73 = 3,864.16/x
  3. Step 3: Cross multiply
    13,859.81x = 20,789.73 × 3,864.16
  4. Step 4: Simplify right side
    13,859.81x = 80,334,843.08
  5. Step 5: Solve for x
    x = 80,334,843.08/13,859.81
  6. Step 6: Final answer
    x = 5,796.24

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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.