Home / 21,936.54-30,269.58-12,503.28

Finding the Fourth Proportional to 21,936.54, 30,269.58 and 12,503.28

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Solution

The fourth proportional to 21,936.54, 30,269.58 and 12,503.28 is: 17,252.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,936.54 : 30,269.58 = 12,503.28 : x
  2. Step 2: Convert to fraction form
    21,936.54/30,269.58 = 12,503.28/x
  3. Step 3: Cross multiply
    21,936.54x = 30,269.58 × 12,503.28
  4. Step 4: Simplify right side
    21,936.54x = 378,469,034.22
  5. Step 5: Solve for x
    x = 378,469,034.22/21,936.54
  6. Step 6: Final answer
    x = 17,252.90

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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.