Home / 21,372.80-32,067.72-8,901.42

Finding the Fourth Proportional to 21,372.80, 32,067.72 and 8,901.42

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Solution

The fourth proportional to 21,372.80, 32,067.72 and 8,901.42 is: 13,355.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,372.80 : 32,067.72 = 8,901.42 : x
  2. Step 2: Convert to fraction form
    21,372.80/32,067.72 = 8,901.42/x
  3. Step 3: Cross multiply
    21,372.80x = 32,067.72 × 8,901.42
  4. Step 4: Simplify right side
    21,372.80x = 285,448,244.16
  5. Step 5: Solve for x
    x = 285,448,244.16/21,372.80
  6. Step 6: Final answer
    x = 13,355.68

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1.5x scale

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.