Home / 13,956.60-20,934.90-5,189.70

Finding the Fourth Proportional to 13,956.60, 20,934.90 and 5,189.70

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Solution

The fourth proportional to 13,956.60, 20,934.90 and 5,189.70 is: 7,784.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,956.60 : 20,934.90 = 5,189.70 : x
  2. Step 2: Convert to fraction form
    13,956.60/20,934.90 = 5,189.70/x
  3. Step 3: Cross multiply
    13,956.60x = 20,934.90 × 5,189.70
  4. Step 4: Simplify right side
    13,956.60x = 108,645,850.53
  5. Step 5: Solve for x
    x = 108,645,850.53/13,956.60
  6. Step 6: Final answer
    x = 7,784.55

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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.