Home / 11,481.76-17,215.63-5,155.45

Finding the Fourth Proportional to 11,481.76, 17,215.63 and 5,155.45

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Solution

The fourth proportional to 11,481.76, 17,215.63 and 5,155.45 is: 7,730.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,481.76 : 17,215.63 = 5,155.45 : x
  2. Step 2: Convert to fraction form
    11,481.76/17,215.63 = 5,155.45/x
  3. Step 3: Cross multiply
    11,481.76x = 17,215.63 × 5,155.45
  4. Step 4: Simplify right side
    11,481.76x = 88,754,319.68
  5. Step 5: Solve for x
    x = 88,754,319.68/11,481.76
  6. Step 6: Final answer
    x = 7,730.03

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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.