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Finding the Fourth Proportional to 18,007.61, 27,002.75 and 8,512.02

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Solution

The fourth proportional to 18,007.61, 27,002.75 and 8,512.02 is: 12,763.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,007.61 : 27,002.75 = 8,512.02 : x
  2. Step 2: Convert to fraction form
    18,007.61/27,002.75 = 8,512.02/x
  3. Step 3: Cross multiply
    18,007.61x = 27,002.75 × 8,512.02
  4. Step 4: Simplify right side
    18,007.61x = 229,847,905.49
  5. Step 5: Solve for x
    x = 229,847,905.49/18,007.61
  6. Step 6: Final answer
    x = 12,763.94

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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.