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Finding the Fourth Proportional to 18,891.72, 26,072.82 and 10,828.26

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Solution

The fourth proportional to 18,891.72, 26,072.82 and 10,828.26 is: 14,944.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.72 : 26,072.82 = 10,828.26 : x
  2. Step 2: Convert to fraction form
    18,891.72/26,072.82 = 10,828.26/x
  3. Step 3: Cross multiply
    18,891.72x = 26,072.82 × 10,828.26
  4. Step 4: Simplify right side
    18,891.72x = 282,323,273.89
  5. Step 5: Solve for x
    x = 282,323,273.89/18,891.72
  6. Step 6: Final answer
    x = 14,944.29

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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.