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Finding the Fourth Proportional to 13,701.53, 18,910.44 and 7,958.09

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Solution

The fourth proportional to 13,701.53, 18,910.44 and 7,958.09 is: 10,983.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,701.53 : 18,910.44 = 7,958.09 : x
  2. Step 2: Convert to fraction form
    13,701.53/18,910.44 = 7,958.09/x
  3. Step 3: Cross multiply
    13,701.53x = 18,910.44 × 7,958.09
  4. Step 4: Simplify right side
    13,701.53x = 150,490,983.46
  5. Step 5: Solve for x
    x = 150,490,983.46/13,701.53
  6. Step 6: Final answer
    x = 10,983.52

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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.