Home / 12,119.18-18,170.24-4,717.40

Finding the Fourth Proportional to 12,119.18, 18,170.24 and 4,717.40

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Solution

The fourth proportional to 12,119.18, 18,170.24 and 4,717.40 is: 7,072.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,119.18 : 18,170.24 = 4,717.40 : x
  2. Step 2: Convert to fraction form
    12,119.18/18,170.24 = 4,717.40/x
  3. Step 3: Cross multiply
    12,119.18x = 18,170.24 × 4,717.40
  4. Step 4: Simplify right side
    12,119.18x = 85,716,290.18
  5. Step 5: Solve for x
    x = 85,716,290.18/12,119.18
  6. Step 6: Final answer
    x = 7,072.78

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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.