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Finding the Fourth Proportional to 18,871.65, 26,039.07 and 10,910.97

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Solution

The fourth proportional to 18,871.65, 26,039.07 and 10,910.97 is: 15,054.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,871.65 : 26,039.07 = 10,910.97 : x
  2. Step 2: Convert to fraction form
    18,871.65/26,039.07 = 10,910.97/x
  3. Step 3: Cross multiply
    18,871.65x = 26,039.07 × 10,910.97
  4. Step 4: Simplify right side
    18,871.65x = 284,111,511.60
  5. Step 5: Solve for x
    x = 284,111,511.60/18,871.65
  6. Step 6: Final answer
    x = 15,054.94

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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.