Home / 13,943.08-20,924.70-8,091.88

Finding the Fourth Proportional to 13,943.08, 20,924.70 and 8,091.88

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Solution

The fourth proportional to 13,943.08, 20,924.70 and 8,091.88 is: 12,143.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943.08 : 20,924.70 = 8,091.88 : x
  2. Step 2: Convert to fraction form
    13,943.08/20,924.70 = 8,091.88/x
  3. Step 3: Cross multiply
    13,943.08x = 20,924.70 × 8,091.88
  4. Step 4: Simplify right side
    13,943.08x = 169,320,161.44
  5. Step 5: Solve for x
    x = 169,320,161.44/13,943.08
  6. Step 6: Final answer
    x = 12,143.67

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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.