Home / 11,985.39-17,981.33-4,194.81

Finding the Fourth Proportional to 11,985.39, 17,981.33 and 4,194.81

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Solution

The fourth proportional to 11,985.39, 17,981.33 and 4,194.81 is: 6,293.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.39 : 17,981.33 = 4,194.81 : x
  2. Step 2: Convert to fraction form
    11,985.39/17,981.33 = 4,194.81/x
  3. Step 3: Cross multiply
    11,985.39x = 17,981.33 × 4,194.81
  4. Step 4: Simplify right side
    11,985.39x = 75,428,241.92
  5. Step 5: Solve for x
    x = 75,428,241.92/11,985.39
  6. Step 6: Final answer
    x = 6,293.35

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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.