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Finding the Fourth Proportional to 15,662.46, 21,614.63 and 8,949.18

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Solution

The fourth proportional to 15,662.46, 21,614.63 and 8,949.18 is: 12,350.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,662.46 : 21,614.63 = 8,949.18 : x
  2. Step 2: Convert to fraction form
    15,662.46/21,614.63 = 8,949.18/x
  3. Step 3: Cross multiply
    15,662.46x = 21,614.63 × 8,949.18
  4. Step 4: Simplify right side
    15,662.46x = 193,433,169.76
  5. Step 5: Solve for x
    x = 193,433,169.76/15,662.46
  6. Step 6: Final answer
    x = 12,350.11

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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.