Home / 28,928.28-43,375.56-14,122.20

Finding the Fourth Proportional to 28,928.28, 43,375.56 and 14,122.20

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Solution

The fourth proportional to 28,928.28, 43,375.56 and 14,122.20 is: 21,175.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,928.28 : 43,375.56 = 14,122.20 : x
  2. Step 2: Convert to fraction form
    28,928.28/43,375.56 = 14,122.20/x
  3. Step 3: Cross multiply
    28,928.28x = 43,375.56 × 14,122.20
  4. Step 4: Simplify right side
    28,928.28x = 612,558,333.43
  5. Step 5: Solve for x
    x = 612,558,333.43/28,928.28
  6. Step 6: Final answer
    x = 21,175.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.