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Finding the Fourth Proportional to 16,992.78, 25,494.59 and 7,129.41

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Solution

The fourth proportional to 16,992.78, 25,494.59 and 7,129.41 is: 10,696.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,992.78 : 25,494.59 = 7,129.41 : x
  2. Step 2: Convert to fraction form
    16,992.78/25,494.59 = 7,129.41/x
  3. Step 3: Cross multiply
    16,992.78x = 25,494.59 × 7,129.41
  4. Step 4: Simplify right side
    16,992.78x = 181,761,448.63
  5. Step 5: Solve for x
    x = 181,761,448.63/16,992.78
  6. Step 6: Final answer
    x = 10,696.39

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1.5x scale

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.