Home / 18,289.62-27,432.09-5,142.96

Finding the Fourth Proportional to 18,289.62, 27,432.09 and 5,142.96

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Solution

The fourth proportional to 18,289.62, 27,432.09 and 5,142.96 is: 7,713.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,289.62 : 27,432.09 = 5,142.96 : x
  2. Step 2: Convert to fraction form
    18,289.62/27,432.09 = 5,142.96/x
  3. Step 3: Cross multiply
    18,289.62x = 27,432.09 × 5,142.96
  4. Step 4: Simplify right side
    18,289.62x = 141,082,141.59
  5. Step 5: Solve for x
    x = 141,082,141.59/18,289.62
  6. Step 6: Final answer
    x = 7,713.78

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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.