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Finding the Fourth Proportional to 12,447.80, 18,664.04 and 6,114.62

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Solution

The fourth proportional to 12,447.80, 18,664.04 and 6,114.62 is: 9,168.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,447.80 : 18,664.04 = 6,114.62 : x
  2. Step 2: Convert to fraction form
    12,447.80/18,664.04 = 6,114.62/x
  3. Step 3: Cross multiply
    12,447.80x = 18,664.04 × 6,114.62
  4. Step 4: Simplify right side
    12,447.80x = 114,123,512.26
  5. Step 5: Solve for x
    x = 114,123,512.26/12,447.80
  6. Step 6: Final answer
    x = 9,168.17

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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.