Home / 14,079.80-21,118.62-3,691.28

Finding the Fourth Proportional to 14,079.80, 21,118.62 and 3,691.28

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Solution

The fourth proportional to 14,079.80, 21,118.62 and 3,691.28 is: 5,536.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,079.80 : 21,118.62 = 3,691.28 : x
  2. Step 2: Convert to fraction form
    14,079.80/21,118.62 = 3,691.28/x
  3. Step 3: Cross multiply
    14,079.80x = 21,118.62 × 3,691.28
  4. Step 4: Simplify right side
    14,079.80x = 77,954,739.63
  5. Step 5: Solve for x
    x = 77,954,739.63/14,079.80
  6. Step 6: Final answer
    x = 5,536.64

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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.