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Finding the Fourth Proportional to 18,218.16, 27,300.84 and 9,891.12

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Solution

The fourth proportional to 18,218.16, 27,300.84 and 9,891.12 is: 14,822.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.16 : 27,300.84 = 9,891.12 : x
  2. Step 2: Convert to fraction form
    18,218.16/27,300.84 = 9,891.12/x
  3. Step 3: Cross multiply
    18,218.16x = 27,300.84 × 9,891.12
  4. Step 4: Simplify right side
    18,218.16x = 270,035,884.54
  5. Step 5: Solve for x
    x = 270,035,884.54/18,218.16
  6. Step 6: Final answer
    x = 14,822.35

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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.