Home / 13,481.25-20,225.87-6,912.05

Finding the Fourth Proportional to 13,481.25, 20,225.87 and 6,912.05

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Solution

The fourth proportional to 13,481.25, 20,225.87 and 6,912.05 is: 10,370.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.25 : 20,225.87 = 6,912.05 : x
  2. Step 2: Convert to fraction form
    13,481.25/20,225.87 = 6,912.05/x
  3. Step 3: Cross multiply
    13,481.25x = 20,225.87 × 6,912.05
  4. Step 4: Simplify right side
    13,481.25x = 139,802,089.04
  5. Step 5: Solve for x
    x = 139,802,089.04/13,481.25
  6. Step 6: Final answer
    x = 10,370.11

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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.