Home / 12,118.17-18,168.75-4,716.39

Finding the Fourth Proportional to 12,118.17, 18,168.75 and 4,716.39

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Solution

The fourth proportional to 12,118.17, 18,168.75 and 4,716.39 is: 7,071.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.17 : 18,168.75 = 4,716.39 : x
  2. Step 2: Convert to fraction form
    12,118.17/18,168.75 = 4,716.39/x
  3. Step 3: Cross multiply
    12,118.17x = 18,168.75 × 4,716.39
  4. Step 4: Simplify right side
    12,118.17x = 85,690,910.81
  5. Step 5: Solve for x
    x = 85,690,910.81/12,118.17
  6. Step 6: Final answer
    x = 7,071.27

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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.