Home / 13,936.38-20,905.78-3,548.13

Finding the Fourth Proportional to 13,936.38, 20,905.78 and 3,548.13

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Solution

The fourth proportional to 13,936.38, 20,905.78 and 3,548.13 is: 5,322.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,936.38 : 20,905.78 = 3,548.13 : x
  2. Step 2: Convert to fraction form
    13,936.38/20,905.78 = 3,548.13/x
  3. Step 3: Cross multiply
    13,936.38x = 20,905.78 × 3,548.13
  4. Step 4: Simplify right side
    13,936.38x = 74,176,425.19
  5. Step 5: Solve for x
    x = 74,176,425.19/13,936.38
  6. Step 6: Final answer
    x = 5,322.50

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1.5x scale

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.