Home / 12,171.06-18,256.62-3,405.96

Finding the Fourth Proportional to 12,171.06, 18,256.62 and 3,405.96

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Solution

The fourth proportional to 12,171.06, 18,256.62 and 3,405.96 is: 5,108.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,171.06 : 18,256.62 = 3,405.96 : x
  2. Step 2: Convert to fraction form
    12,171.06/18,256.62 = 3,405.96/x
  3. Step 3: Cross multiply
    12,171.06x = 18,256.62 × 3,405.96
  4. Step 4: Simplify right side
    12,171.06x = 62,181,317.46
  5. Step 5: Solve for x
    x = 62,181,317.46/12,171.06
  6. Step 6: Final answer
    x = 5,108.95

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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.