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Finding the Fourth Proportional to 18,906.56, 28,364.16 and 10,150.08

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Solution

The fourth proportional to 18,906.56, 28,364.16 and 10,150.08 is: 15,227.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,906.56 : 28,364.16 = 10,150.08 : x
  2. Step 2: Convert to fraction form
    18,906.56/28,364.16 = 10,150.08/x
  3. Step 3: Cross multiply
    18,906.56x = 28,364.16 × 10,150.08
  4. Step 4: Simplify right side
    18,906.56x = 287,898,493.13
  5. Step 5: Solve for x
    x = 287,898,493.13/18,906.56
  6. Step 6: Final answer
    x = 15,227.44

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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.