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Finding the Fourth Proportional to 18,009.68, 24,845.64 and 11,722.64

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Solution

The fourth proportional to 18,009.68, 24,845.64 and 11,722.64 is: 16,172.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,009.68 : 24,845.64 = 11,722.64 : x
  2. Step 2: Convert to fraction form
    18,009.68/24,845.64 = 11,722.64/x
  3. Step 3: Cross multiply
    18,009.68x = 24,845.64 × 11,722.64
  4. Step 4: Simplify right side
    18,009.68x = 291,256,493.29
  5. Step 5: Solve for x
    x = 291,256,493.29/18,009.68
  6. Step 6: Final answer
    x = 16,172.22

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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.