Home / 13,481.48-20,224.95-5,161.76

Finding the Fourth Proportional to 13,481.48, 20,224.95 and 5,161.76

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Solution

The fourth proportional to 13,481.48, 20,224.95 and 5,161.76 is: 7,743.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.48 : 20,224.95 = 5,161.76 : x
  2. Step 2: Convert to fraction form
    13,481.48/20,224.95 = 5,161.76/x
  3. Step 3: Cross multiply
    13,481.48x = 20,224.95 × 5,161.76
  4. Step 4: Simplify right side
    13,481.48x = 104,396,312.10
  5. Step 5: Solve for x
    x = 104,396,312.10/13,481.48
  6. Step 6: Final answer
    x = 7,743.69

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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.