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Finding the Fourth Proportional to 18,284.20, 27,426.30 and 18,111.40

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Solution

The fourth proportional to 18,284.20, 27,426.30 and 18,111.40 is: 27,167.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,284.20 : 27,426.30 = 18,111.40 : x
  2. Step 2: Convert to fraction form
    18,284.20/27,426.30 = 18,111.40/x
  3. Step 3: Cross multiply
    18,284.20x = 27,426.30 × 18,111.40
  4. Step 4: Simplify right side
    18,284.20x = 496,728,689.82
  5. Step 5: Solve for x
    x = 496,728,689.82/18,284.20
  6. Step 6: Final answer
    x = 27,167.10

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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.