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Finding the Fourth Proportional to 18,072.70, 27,117.15 and 8,206.90

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Solution

The fourth proportional to 18,072.70, 27,117.15 and 8,206.90 is: 12,314.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,072.70 : 27,117.15 = 8,206.90 : x
  2. Step 2: Convert to fraction form
    18,072.70/27,117.15 = 8,206.90/x
  3. Step 3: Cross multiply
    18,072.70x = 27,117.15 × 8,206.90
  4. Step 4: Simplify right side
    18,072.70x = 222,547,738.34
  5. Step 5: Solve for x
    x = 222,547,738.34/18,072.70
  6. Step 6: Final answer
    x = 12,314.03

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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.