Home / 12,118.15-18,177.24-10,469.71

Finding the Fourth Proportional to 12,118.15, 18,177.24 and 10,469.71

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Solution

The fourth proportional to 12,118.15, 18,177.24 and 10,469.71 is: 15,704.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.15 : 18,177.24 = 10,469.71 : x
  2. Step 2: Convert to fraction form
    12,118.15/18,177.24 = 10,469.71/x
  3. Step 3: Cross multiply
    12,118.15x = 18,177.24 × 10,469.71
  4. Step 4: Simplify right side
    12,118.15x = 190,310,431.40
  5. Step 5: Solve for x
    x = 190,310,431.40/12,118.15
  6. Step 6: Final answer
    x = 15,704.58

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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.