Home / 13,920.64-20,882.18-3,532.39

Finding the Fourth Proportional to 13,920.64, 20,882.18 and 3,532.39

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Solution

The fourth proportional to 13,920.64, 20,882.18 and 3,532.39 is: 5,298.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.64 : 20,882.18 = 3,532.39 : x
  2. Step 2: Convert to fraction form
    13,920.64/20,882.18 = 3,532.39/x
  3. Step 3: Cross multiply
    13,920.64x = 20,882.18 × 3,532.39
  4. Step 4: Simplify right side
    13,920.64x = 73,763,986.15
  5. Step 5: Solve for x
    x = 73,763,986.15/13,920.64
  6. Step 6: Final answer
    x = 5,298.89

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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.