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Finding the Fourth Proportional to 18,059.72, 27,084.65 and 5,406.50

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Solution

The fourth proportional to 18,059.72, 27,084.65 and 5,406.50 is: 8,108.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,059.72 : 27,084.65 = 5,406.50 : x
  2. Step 2: Convert to fraction form
    18,059.72/27,084.65 = 5,406.50/x
  3. Step 3: Cross multiply
    18,059.72x = 27,084.65 × 5,406.50
  4. Step 4: Simplify right side
    18,059.72x = 146,433,200.90
  5. Step 5: Solve for x
    x = 146,433,200.90/18,059.72
  6. Step 6: Final answer
    x = 8,108.28

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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.