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Finding the Fourth Proportional to 18,253.20, 27,363.60 and 12,016.20

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Solution

The fourth proportional to 18,253.20, 27,363.60 and 12,016.20 is: 18,013.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,253.20 : 27,363.60 = 12,016.20 : x
  2. Step 2: Convert to fraction form
    18,253.20/27,363.60 = 12,016.20/x
  3. Step 3: Cross multiply
    18,253.20x = 27,363.60 × 12,016.20
  4. Step 4: Simplify right side
    18,253.20x = 328,806,490.32
  5. Step 5: Solve for x
    x = 328,806,490.32/18,253.20
  6. Step 6: Final answer
    x = 18,013.64

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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.