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Finding the Fourth Proportional to 12,207.80, 18,273.30 and 8,751.80

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Solution

The fourth proportional to 12,207.80, 18,273.30 and 8,751.80 is: 13,100.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,207.80 : 18,273.30 = 8,751.80 : x
  2. Step 2: Convert to fraction form
    12,207.80/18,273.30 = 8,751.80/x
  3. Step 3: Cross multiply
    12,207.80x = 18,273.30 × 8,751.80
  4. Step 4: Simplify right side
    12,207.80x = 159,924,266.94
  5. Step 5: Solve for x
    x = 159,924,266.94/12,207.80
  6. Step 6: Final answer
    x = 13,100.17

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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.