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Finding the Fourth Proportional to 18,090.40, 27,092.40 and 14,634.40

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Solution

The fourth proportional to 18,090.40, 27,092.40 and 14,634.40 is: 21,916.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,090.40 : 27,092.40 = 14,634.40 : x
  2. Step 2: Convert to fraction form
    18,090.40/27,092.40 = 14,634.40/x
  3. Step 3: Cross multiply
    18,090.40x = 27,092.40 × 14,634.40
  4. Step 4: Simplify right side
    18,090.40x = 396,481,018.56
  5. Step 5: Solve for x
    x = 396,481,018.56/18,090.40
  6. Step 6: Final answer
    x = 21,916.65

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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.