Home / 12,079.64-18,118.86-3,314.60

Finding the Fourth Proportional to 12,079.64, 18,118.86 and 3,314.60

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Solution

The fourth proportional to 12,079.64, 18,118.86 and 3,314.60 is: 4,971.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.64 : 18,118.86 = 3,314.60 : x
  2. Step 2: Convert to fraction form
    12,079.64/18,118.86 = 3,314.60/x
  3. Step 3: Cross multiply
    12,079.64x = 18,118.86 × 3,314.60
  4. Step 4: Simplify right side
    12,079.64x = 60,056,773.36
  5. Step 5: Solve for x
    x = 60,056,773.36/12,079.64
  6. Step 6: Final answer
    x = 4,971.74

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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.