Home / 20,388.14-30,563.50-7,904.96

Finding the Fourth Proportional to 20,388.14, 30,563.50 and 7,904.96

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Solution

The fourth proportional to 20,388.14, 30,563.50 and 7,904.96 is: 11,850.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388.14 : 30,563.50 = 7,904.96 : x
  2. Step 2: Convert to fraction form
    20,388.14/30,563.50 = 7,904.96/x
  3. Step 3: Cross multiply
    20,388.14x = 30,563.50 × 7,904.96
  4. Step 4: Simplify right side
    20,388.14x = 241,603,244.96
  5. Step 5: Solve for x
    x = 241,603,244.96/20,388.14
  6. Step 6: Final answer
    x = 11,850.19

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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.