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Finding the Fourth Proportional to 18,487.01, 25,512.09 and 10,103.51

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Solution

The fourth proportional to 18,487.01, 25,512.09 and 10,103.51 is: 13,942.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,487.01 : 25,512.09 = 10,103.51 : x
  2. Step 2: Convert to fraction form
    18,487.01/25,512.09 = 10,103.51/x
  3. Step 3: Cross multiply
    18,487.01x = 25,512.09 × 10,103.51
  4. Step 4: Simplify right side
    18,487.01x = 257,761,656.44
  5. Step 5: Solve for x
    x = 257,761,656.44/18,487.01
  6. Step 6: Final answer
    x = 13,942.85

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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.