Home / 12,112.64-18,167.90-4,213.11

Finding the Fourth Proportional to 12,112.64, 18,167.90 and 4,213.11

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Solution

The fourth proportional to 12,112.64, 18,167.90 and 4,213.11 is: 6,319.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112.64 : 18,167.90 = 4,213.11 : x
  2. Step 2: Convert to fraction form
    12,112.64/18,167.90 = 4,213.11/x
  3. Step 3: Cross multiply
    12,112.64x = 18,167.90 × 4,213.11
  4. Step 4: Simplify right side
    12,112.64x = 76,543,361.17
  5. Step 5: Solve for x
    x = 76,543,361.17/12,112.64
  6. Step 6: Final answer
    x = 6,319.30

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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.