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Finding the Fourth Proportional to 18,625.53, 27,945.87 and 11,969.49

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Solution

The fourth proportional to 18,625.53, 27,945.87 and 11,969.49 is: 17,959.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,625.53 : 27,945.87 = 11,969.49 : x
  2. Step 2: Convert to fraction form
    18,625.53/27,945.87 = 11,969.49/x
  3. Step 3: Cross multiply
    18,625.53x = 27,945.87 × 11,969.49
  4. Step 4: Simplify right side
    18,625.53x = 334,497,811.51
  5. Step 5: Solve for x
    x = 334,497,811.51/18,625.53
  6. Step 6: Final answer
    x = 17,959.10

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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.