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Finding the Fourth Proportional to 18,007.20, 27,002.70 and 6,910.20

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Solution

The fourth proportional to 18,007.20, 27,002.70 and 6,910.20 is: 10,362.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,007.20 : 27,002.70 = 6,910.20 : x
  2. Step 2: Convert to fraction form
    18,007.20/27,002.70 = 6,910.20/x
  3. Step 3: Cross multiply
    18,007.20x = 27,002.70 × 6,910.20
  4. Step 4: Simplify right side
    18,007.20x = 186,594,057.54
  5. Step 5: Solve for x
    x = 186,594,057.54/18,007.20
  6. Step 6: Final answer
    x = 10,362.19

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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.