Home / 20,952.42-28,914.78-11,392.80

Finding the Fourth Proportional to 20,952.42, 28,914.78 and 11,392.80

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Solution

The fourth proportional to 20,952.42, 28,914.78 and 11,392.80 is: 15,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.42 : 28,914.78 = 11,392.80 : x
  2. Step 2: Convert to fraction form
    20,952.42/28,914.78 = 11,392.80/x
  3. Step 3: Cross multiply
    20,952.42x = 28,914.78 × 11,392.80
  4. Step 4: Simplify right side
    20,952.42x = 329,420,305.58
  5. Step 5: Solve for x
    x = 329,420,305.58/20,952.42
  6. Step 6: Final answer
    x = 15,722.30

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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.