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Finding the Fourth Proportional to 18,007.08, 24,880.22 and 12,961.32

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Solution

The fourth proportional to 18,007.08, 24,880.22 and 12,961.32 is: 17,908.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,007.08 : 24,880.22 = 12,961.32 : x
  2. Step 2: Convert to fraction form
    18,007.08/24,880.22 = 12,961.32/x
  3. Step 3: Cross multiply
    18,007.08x = 24,880.22 × 12,961.32
  4. Step 4: Simplify right side
    18,007.08x = 322,480,493.09
  5. Step 5: Solve for x
    x = 322,480,493.09/18,007.08
  6. Step 6: Final answer
    x = 17,908.54

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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.