Home / 14,781.80-20,399.28-8,067.44

Finding the Fourth Proportional to 14,781.80, 20,399.28 and 8,067.44

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Solution

The fourth proportional to 14,781.80, 20,399.28 and 8,067.44 is: 11,133.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,781.80 : 20,399.28 = 8,067.44 : x
  2. Step 2: Convert to fraction form
    14,781.80/20,399.28 = 8,067.44/x
  3. Step 3: Cross multiply
    14,781.80x = 20,399.28 × 8,067.44
  4. Step 4: Simplify right side
    14,781.80x = 164,569,967.44
  5. Step 5: Solve for x
    x = 164,569,967.44/14,781.80
  6. Step 6: Final answer
    x = 11,133.28

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1.5x scale

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.