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Finding the Fourth Proportional to 17,619.22, 26,424.79 and 10,505.47

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Solution

The fourth proportional to 17,619.22, 26,424.79 and 10,505.47 is: 15,755.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,619.22 : 26,424.79 = 10,505.47 : x
  2. Step 2: Convert to fraction form
    17,619.22/26,424.79 = 10,505.47/x
  3. Step 3: Cross multiply
    17,619.22x = 26,424.79 × 10,505.47
  4. Step 4: Simplify right side
    17,619.22x = 277,604,838.60
  5. Step 5: Solve for x
    x = 277,604,838.60/17,619.22
  6. Step 6: Final answer
    x = 15,755.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.