Home / 12,161.47-18,121.30-10,835.03

Finding the Fourth Proportional to 12,161.47, 18,121.30 and 10,835.03

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Solution

The fourth proportional to 12,161.47, 18,121.30 and 10,835.03 is: 16,144.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.47 : 18,121.30 = 10,835.03 : x
  2. Step 2: Convert to fraction form
    12,161.47/18,121.30 = 10,835.03/x
  3. Step 3: Cross multiply
    12,161.47x = 18,121.30 × 10,835.03
  4. Step 4: Simplify right side
    12,161.47x = 196,344,738.53
  5. Step 5: Solve for x
    x = 196,344,738.53/12,161.47
  6. Step 6: Final answer
    x = 16,144.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.