Home / 11,405.18-17,109.60-3,612.20

Finding the Fourth Proportional to 11,405.18, 17,109.60 and 3,612.20

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Solution

The fourth proportional to 11,405.18, 17,109.60 and 3,612.20 is: 5,418.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,405.18 : 17,109.60 = 3,612.20 : x
  2. Step 2: Convert to fraction form
    11,405.18/17,109.60 = 3,612.20/x
  3. Step 3: Cross multiply
    11,405.18x = 17,109.60 × 3,612.20
  4. Step 4: Simplify right side
    11,405.18x = 61,803,297.12
  5. Step 5: Solve for x
    x = 61,803,297.12/11,405.18
  6. Step 6: Final answer
    x = 5,418.88

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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.