Home / 14,782.20-20,399.28-8,067.77

Finding the Fourth Proportional to 14,782.20, 20,399.28 and 8,067.77

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Solution

The fourth proportional to 14,782.20, 20,399.28 and 8,067.77 is: 11,133.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,782.20 : 20,399.28 = 8,067.77 : x
  2. Step 2: Convert to fraction form
    14,782.20/20,399.28 = 8,067.77/x
  3. Step 3: Cross multiply
    14,782.20x = 20,399.28 × 8,067.77
  4. Step 4: Simplify right side
    14,782.20x = 164,576,643.45
  5. Step 5: Solve for x
    x = 164,576,643.45/14,782.20
  6. Step 6: Final answer
    x = 11,133.44

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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.