Home / 20,236.13-30,372.91-10,247.90

Finding the Fourth Proportional to 20,236.13, 30,372.91 and 10,247.90

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Solution

The fourth proportional to 20,236.13, 30,372.91 and 10,247.90 is: 15,381.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,236.13 : 30,372.91 = 10,247.90 : x
  2. Step 2: Convert to fraction form
    20,236.13/30,372.91 = 10,247.90/x
  3. Step 3: Cross multiply
    20,236.13x = 30,372.91 × 10,247.90
  4. Step 4: Simplify right side
    20,236.13x = 311,258,544.39
  5. Step 5: Solve for x
    x = 311,258,544.39/20,236.13
  6. Step 6: Final answer
    x = 15,381.33

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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.