Home / 20,824.58-28,737.94-11,393.12

Finding the Fourth Proportional to 20,824.58, 28,737.94 and 11,393.12

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Solution

The fourth proportional to 20,824.58, 28,737.94 and 11,393.12 is: 15,722.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.58 : 28,737.94 = 11,393.12 : x
  2. Step 2: Convert to fraction form
    20,824.58/28,737.94 = 11,393.12/x
  3. Step 3: Cross multiply
    20,824.58x = 28,737.94 × 11,393.12
  4. Step 4: Simplify right side
    20,824.58x = 327,414,798.97
  5. Step 5: Solve for x
    x = 327,414,798.97/20,824.58
  6. Step 6: Final answer
    x = 15,722.52

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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.