Home / 13,580.22-20,363.39-5,680.60

Finding the Fourth Proportional to 13,580.22, 20,363.39 and 5,680.60

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Solution

The fourth proportional to 13,580.22, 20,363.39 and 5,680.60 is: 8,517.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.22 : 20,363.39 = 5,680.60 : x
  2. Step 2: Convert to fraction form
    13,580.22/20,363.39 = 5,680.60/x
  3. Step 3: Cross multiply
    13,580.22x = 20,363.39 × 5,680.60
  4. Step 4: Simplify right side
    13,580.22x = 115,676,193.92
  5. Step 5: Solve for x
    x = 115,676,193.92/13,580.22
  6. Step 6: Final answer
    x = 8,517.99

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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.