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Finding the Fourth Proportional to 14,955.30, 20,636.91 and 8,667

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Solution

The fourth proportional to 14,955.30, 20,636.91 and 8,667 is: 11,959.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,955.30 : 20,636.91 = 8,667 : x
  2. Step 2: Convert to fraction form
    14,955.30/20,636.91 = 8,667/x
  3. Step 3: Cross multiply
    14,955.30x = 20,636.91 × 8,667
  4. Step 4: Simplify right side
    14,955.30x = 178,860,098.97
  5. Step 5: Solve for x
    x = 178,860,098.97/14,955.30
  6. Step 6: Final answer
    x = 11,959.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.