Home / 13,843.80-20,768.40-5,079.47

Finding the Fourth Proportional to 13,843.80, 20,768.40 and 5,079.47

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Solution

The fourth proportional to 13,843.80, 20,768.40 and 5,079.47 is: 7,620.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,843.80 : 20,768.40 = 5,079.47 : x
  2. Step 2: Convert to fraction form
    13,843.80/20,768.40 = 5,079.47/x
  3. Step 3: Cross multiply
    13,843.80x = 20,768.40 × 5,079.47
  4. Step 4: Simplify right side
    13,843.80x = 105,492,360.91
  5. Step 5: Solve for x
    x = 105,492,360.91/13,843.80
  6. Step 6: Final answer
    x = 7,620.19

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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.