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Finding the Fourth Proportional to 18,268.54, 27,411.48 and 12,654.84

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Solution

The fourth proportional to 18,268.54, 27,411.48 and 12,654.84 is: 18,988.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,268.54 : 27,411.48 = 12,654.84 : x
  2. Step 2: Convert to fraction form
    18,268.54/27,411.48 = 12,654.84/x
  3. Step 3: Cross multiply
    18,268.54x = 27,411.48 × 12,654.84
  4. Step 4: Simplify right side
    18,268.54x = 346,887,893.56
  5. Step 5: Solve for x
    x = 346,887,893.56/18,268.54
  6. Step 6: Final answer
    x = 18,988.27

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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.