Home / 20,824.20-28,737.72-11,392.92

Finding the Fourth Proportional to 20,824.20, 28,737.72 and 11,392.92

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Solution

The fourth proportional to 20,824.20, 28,737.72 and 11,392.92 is: 15,722.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.20 : 28,737.72 = 11,392.92 : x
  2. Step 2: Convert to fraction form
    20,824.20/28,737.72 = 11,392.92/x
  3. Step 3: Cross multiply
    20,824.20x = 28,737.72 × 11,392.92
  4. Step 4: Simplify right side
    20,824.20x = 327,406,544.94
  5. Step 5: Solve for x
    x = 327,406,544.94/20,824.20
  6. Step 6: Final answer
    x = 15,722.41

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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.