Home / 12,121.65-18,175.03-4,717.49

Finding the Fourth Proportional to 12,121.65, 18,175.03 and 4,717.49

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Solution

The fourth proportional to 12,121.65, 18,175.03 and 4,717.49 is: 7,073.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.65 : 18,175.03 = 4,717.49 : x
  2. Step 2: Convert to fraction form
    12,121.65/18,175.03 = 4,717.49/x
  3. Step 3: Cross multiply
    12,121.65x = 18,175.03 × 4,717.49
  4. Step 4: Simplify right side
    12,121.65x = 85,740,419.61
  5. Step 5: Solve for x
    x = 85,740,419.61/12,121.65
  6. Step 6: Final answer
    x = 7,073.33

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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.