Home / 12,111.66-18,161.57-4,994.57

Finding the Fourth Proportional to 12,111.66, 18,161.57 and 4,994.57

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Solution

The fourth proportional to 12,111.66, 18,161.57 and 4,994.57 is: 7,489.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,111.66 : 18,161.57 = 4,994.57 : x
  2. Step 2: Convert to fraction form
    12,111.66/18,161.57 = 4,994.57/x
  3. Step 3: Cross multiply
    12,111.66x = 18,161.57 × 4,994.57
  4. Step 4: Simplify right side
    12,111.66x = 90,709,211.39
  5. Step 5: Solve for x
    x = 90,709,211.39/12,111.66
  6. Step 6: Final answer
    x = 7,489.41

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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.