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Finding the Fourth Proportional to 18,150.09, 25,046.19 and 12,180.93

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Solution

The fourth proportional to 18,150.09, 25,046.19 and 12,180.93 is: 16,809.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,150.09 : 25,046.19 = 12,180.93 : x
  2. Step 2: Convert to fraction form
    18,150.09/25,046.19 = 12,180.93/x
  3. Step 3: Cross multiply
    18,150.09x = 25,046.19 × 12,180.93
  4. Step 4: Simplify right side
    18,150.09x = 305,085,887.16
  5. Step 5: Solve for x
    x = 305,085,887.16/18,150.09
  6. Step 6: Final answer
    x = 16,809.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.