Home / 20,824.85-28,740.27-11,394.83

Finding the Fourth Proportional to 20,824.85, 28,740.27 and 11,394.83

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Solution

The fourth proportional to 20,824.85, 28,740.27 and 11,394.83 is: 15,725.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.85 : 28,740.27 = 11,394.83 : x
  2. Step 2: Convert to fraction form
    20,824.85/28,740.27 = 11,394.83/x
  3. Step 3: Cross multiply
    20,824.85x = 28,740.27 × 11,394.83
  4. Step 4: Simplify right side
    20,824.85x = 327,490,490.80
  5. Step 5: Solve for x
    x = 327,490,490.80/20,824.85
  6. Step 6: Final answer
    x = 15,725.95

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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.