Home / 13,661.13-20,485.97-5,767.21

Finding the Fourth Proportional to 13,661.13, 20,485.97 and 5,767.21

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Solution

The fourth proportional to 13,661.13, 20,485.97 and 5,767.21 is: 8,648.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.13 : 20,485.97 = 5,767.21 : x
  2. Step 2: Convert to fraction form
    13,661.13/20,485.97 = 5,767.21/x
  3. Step 3: Cross multiply
    13,661.13x = 20,485.97 × 5,767.21
  4. Step 4: Simplify right side
    13,661.13x = 118,146,891.04
  5. Step 5: Solve for x
    x = 118,146,891.04/13,661.13
  6. Step 6: Final answer
    x = 8,648.40

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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.