Home / 20,823.94-28,737.03-11,392.70

Finding the Fourth Proportional to 20,823.94, 28,737.03 and 11,392.70

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Solution

The fourth proportional to 20,823.94, 28,737.03 and 11,392.70 is: 15,721.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.94 : 28,737.03 = 11,392.70 : x
  2. Step 2: Convert to fraction form
    20,823.94/28,737.03 = 11,392.70/x
  3. Step 3: Cross multiply
    20,823.94x = 28,737.03 × 11,392.70
  4. Step 4: Simplify right side
    20,823.94x = 327,392,361.68
  5. Step 5: Solve for x
    x = 327,392,361.68/20,823.94
  6. Step 6: Final answer
    x = 15,721.92

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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.