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Finding the Fourth Proportional to 18,310.71, 25,268.55 and 10,755.75

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Solution

The fourth proportional to 18,310.71, 25,268.55 and 10,755.75 is: 14,842.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,310.71 : 25,268.55 = 10,755.75 : x
  2. Step 2: Convert to fraction form
    18,310.71/25,268.55 = 10,755.75/x
  3. Step 3: Cross multiply
    18,310.71x = 25,268.55 × 10,755.75
  4. Step 4: Simplify right side
    18,310.71x = 271,782,206.66
  5. Step 5: Solve for x
    x = 271,782,206.66/18,310.71
  6. Step 6: Final answer
    x = 14,842.80

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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.