Home / 20,481.60-30,722.41-5,690.53

Finding the Fourth Proportional to 20,481.60, 30,722.41 and 5,690.53

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Solution

The fourth proportional to 20,481.60, 30,722.41 and 5,690.53 is: 8,535.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,481.60 : 30,722.41 = 5,690.53 : x
  2. Step 2: Convert to fraction form
    20,481.60/30,722.41 = 5,690.53/x
  3. Step 3: Cross multiply
    20,481.60x = 30,722.41 × 5,690.53
  4. Step 4: Simplify right side
    20,481.60x = 174,826,642.17
  5. Step 5: Solve for x
    x = 174,826,642.17/20,481.60
  6. Step 6: Final answer
    x = 8,535.79

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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.