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Finding the Fourth Proportional to 14,949.63, 20,630.49 and 8,665.65

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Solution

The fourth proportional to 14,949.63, 20,630.49 and 8,665.65 is: 11,958.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,949.63 : 20,630.49 = 8,665.65 : x
  2. Step 2: Convert to fraction form
    14,949.63/20,630.49 = 8,665.65/x
  3. Step 3: Cross multiply
    14,949.63x = 20,630.49 × 8,665.65
  4. Step 4: Simplify right side
    14,949.63x = 178,776,605.67
  5. Step 5: Solve for x
    x = 178,776,605.67/14,949.63
  6. Step 6: Final answer
    x = 11,958.60

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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.