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Finding the Fourth Proportional to 18,306.28, 27,459.43 and 4,455.28

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Solution

The fourth proportional to 18,306.28, 27,459.43 and 4,455.28 is: 6,682.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,306.28 : 27,459.43 = 4,455.28 : x
  2. Step 2: Convert to fraction form
    18,306.28/27,459.43 = 4,455.28/x
  3. Step 3: Cross multiply
    18,306.28x = 27,459.43 × 4,455.28
  4. Step 4: Simplify right side
    18,306.28x = 122,339,472.48
  5. Step 5: Solve for x
    x = 122,339,472.48/18,306.28
  6. Step 6: Final answer
    x = 6,682.92

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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.