Home / 20,375.22-30,564.45-8,688.54

Finding the Fourth Proportional to 20,375.22, 30,564.45 and 8,688.54

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Solution

The fourth proportional to 20,375.22, 30,564.45 and 8,688.54 is: 13,033.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.22 : 30,564.45 = 8,688.54 : x
  2. Step 2: Convert to fraction form
    20,375.22/30,564.45 = 8,688.54/x
  3. Step 3: Cross multiply
    20,375.22x = 30,564.45 × 8,688.54
  4. Step 4: Simplify right side
    20,375.22x = 265,560,446.40
  5. Step 5: Solve for x
    x = 265,560,446.40/20,375.22
  6. Step 6: Final answer
    x = 13,033.50

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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.