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Finding the Fourth Proportional to 18,951.41, 26,163.64 and 13,141.01

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Solution

The fourth proportional to 18,951.41, 26,163.64 and 13,141.01 is: 18,142.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,951.41 : 26,163.64 = 13,141.01 : x
  2. Step 2: Convert to fraction form
    18,951.41/26,163.64 = 13,141.01/x
  3. Step 3: Cross multiply
    18,951.41x = 26,163.64 × 13,141.01
  4. Step 4: Simplify right side
    18,951.41x = 343,816,736.71
  5. Step 5: Solve for x
    x = 343,816,736.71/18,951.41
  6. Step 6: Final answer
    x = 18,142.01

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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.