Home / 13,551.05-20,332.39-5,236.90

Finding the Fourth Proportional to 13,551.05, 20,332.39 and 5,236.90

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Solution

The fourth proportional to 13,551.05, 20,332.39 and 5,236.90 is: 7,857.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.05 : 20,332.39 = 5,236.90 : x
  2. Step 2: Convert to fraction form
    13,551.05/20,332.39 = 5,236.90/x
  3. Step 3: Cross multiply
    13,551.05x = 20,332.39 × 5,236.90
  4. Step 4: Simplify right side
    13,551.05x = 106,478,667.01
  5. Step 5: Solve for x
    x = 106,478,667.01/13,551.05
  6. Step 6: Final answer
    x = 7,857.60

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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.