Home / 13,581.76-20,380.60-5,683.62

Finding the Fourth Proportional to 13,581.76, 20,380.60 and 5,683.62

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Solution

The fourth proportional to 13,581.76, 20,380.60 and 5,683.62 is: 8,528.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.76 : 20,380.60 = 5,683.62 : x
  2. Step 2: Convert to fraction form
    13,581.76/20,380.60 = 5,683.62/x
  3. Step 3: Cross multiply
    13,581.76x = 20,380.60 × 5,683.62
  4. Step 4: Simplify right side
    13,581.76x = 115,835,557.35
  5. Step 5: Solve for x
    x = 115,835,557.35/13,581.76
  6. Step 6: Final answer
    x = 8,528.76

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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.