Home / 19,650.50-27,120.44-12,591.96

Finding the Fourth Proportional to 19,650.50, 27,120.44 and 12,591.96

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Solution

The fourth proportional to 19,650.50, 27,120.44 and 12,591.96 is: 17,378.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,650.50 : 27,120.44 = 12,591.96 : x
  2. Step 2: Convert to fraction form
    19,650.50/27,120.44 = 12,591.96/x
  3. Step 3: Cross multiply
    19,650.50x = 27,120.44 × 12,591.96
  4. Step 4: Simplify right side
    19,650.50x = 341,499,495.66
  5. Step 5: Solve for x
    x = 341,499,495.66/19,650.50
  6. Step 6: Final answer
    x = 17,378.67

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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.