Home / 15,219.32-20,996.88-11,249.96

Finding the Fourth Proportional to 15,219.32, 20,996.88 and 11,249.96

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Solution

The fourth proportional to 15,219.32, 20,996.88 and 11,249.96 is: 15,520.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.32 : 20,996.88 = 11,249.96 : x
  2. Step 2: Convert to fraction form
    15,219.32/20,996.88 = 11,249.96/x
  3. Step 3: Cross multiply
    15,219.32x = 20,996.88 × 11,249.96
  4. Step 4: Simplify right side
    15,219.32x = 236,214,060.12
  5. Step 5: Solve for x
    x = 236,214,060.12/15,219.32
  6. Step 6: Final answer
    x = 15,520.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.