Home / 12,119.17-18,170.25-4,717.39

Finding the Fourth Proportional to 12,119.17, 18,170.25 and 4,717.39

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Solution

The fourth proportional to 12,119.17, 18,170.25 and 4,717.39 is: 7,072.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,119.17 : 18,170.25 = 4,717.39 : x
  2. Step 2: Convert to fraction form
    12,119.17/18,170.25 = 4,717.39/x
  3. Step 3: Cross multiply
    12,119.17x = 18,170.25 × 4,717.39
  4. Step 4: Simplify right side
    12,119.17x = 85,716,155.65
  5. Step 5: Solve for x
    x = 85,716,155.65/12,119.17
  6. Step 6: Final answer
    x = 7,072.77

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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.