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Finding the Fourth Proportional to 18,012.34, 27,009.85 and 8,516.74

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Solution

The fourth proportional to 18,012.34, 27,009.85 and 8,516.74 is: 12,771.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,012.34 : 27,009.85 = 8,516.74 : x
  2. Step 2: Convert to fraction form
    18,012.34/27,009.85 = 8,516.74/x
  3. Step 3: Cross multiply
    18,012.34x = 27,009.85 × 8,516.74
  4. Step 4: Simplify right side
    18,012.34x = 230,035,914.30
  5. Step 5: Solve for x
    x = 230,035,914.30/18,012.34
  6. Step 6: Final answer
    x = 12,771.02

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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.