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Finding the Fourth Proportional to 18,203.28, 27,287.91 and 9,871.08

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Solution

The fourth proportional to 18,203.28, 27,287.91 and 9,871.08 is: 14,797.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,203.28 : 27,287.91 = 9,871.08 : x
  2. Step 2: Convert to fraction form
    18,203.28/27,287.91 = 9,871.08/x
  3. Step 3: Cross multiply
    18,203.28x = 27,287.91 × 9,871.08
  4. Step 4: Simplify right side
    18,203.28x = 269,361,142.64
  5. Step 5: Solve for x
    x = 269,361,142.64/18,203.28
  6. Step 6: Final answer
    x = 14,797.40

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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.