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Finding the Fourth Proportional to 18,228.20, 27,371.10 and 13,332.20

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Solution

The fourth proportional to 18,228.20, 27,371.10 and 13,332.20 is: 20,019.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,228.20 : 27,371.10 = 13,332.20 : x
  2. Step 2: Convert to fraction form
    18,228.20/27,371.10 = 13,332.20/x
  3. Step 3: Cross multiply
    18,228.20x = 27,371.10 × 13,332.20
  4. Step 4: Simplify right side
    18,228.20x = 364,916,979.42
  5. Step 5: Solve for x
    x = 364,916,979.42/18,228.20
  6. Step 6: Final answer
    x = 20,019.36

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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.