Home / 20,823.89-28,737.20-11,263.97

Finding the Fourth Proportional to 20,823.89, 28,737.20 and 11,263.97

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Solution

The fourth proportional to 20,823.89, 28,737.20 and 11,263.97 is: 15,544.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.89 : 28,737.20 = 11,263.97 : x
  2. Step 2: Convert to fraction form
    20,823.89/28,737.20 = 11,263.97/x
  3. Step 3: Cross multiply
    20,823.89x = 28,737.20 × 11,263.97
  4. Step 4: Simplify right side
    20,823.89x = 323,694,758.68
  5. Step 5: Solve for x
    x = 323,694,758.68/20,823.89
  6. Step 6: Final answer
    x = 15,544.40

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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.