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Finding the Fourth Proportional to 18,461.58, 25,475.97 and 10,906.21

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Solution

The fourth proportional to 18,461.58, 25,475.97 and 10,906.21 is: 15,049.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.58 : 25,475.97 = 10,906.21 : x
  2. Step 2: Convert to fraction form
    18,461.58/25,475.97 = 10,906.21/x
  3. Step 3: Cross multiply
    18,461.58x = 25,475.97 × 10,906.21
  4. Step 4: Simplify right side
    18,461.58x = 277,846,278.77
  5. Step 5: Solve for x
    x = 277,846,278.77/18,461.58
  6. Step 6: Final answer
    x = 15,049.97

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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.