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Finding the Fourth Proportional to 17,671.01, 26,462.77 and 12,979.89

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Solution

The fourth proportional to 17,671.01, 26,462.77 and 12,979.89 is: 19,437.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,671.01 : 26,462.77 = 12,979.89 : x
  2. Step 2: Convert to fraction form
    17,671.01/26,462.77 = 12,979.89/x
  3. Step 3: Cross multiply
    17,671.01x = 26,462.77 × 12,979.89
  4. Step 4: Simplify right side
    17,671.01x = 343,483,811.25
  5. Step 5: Solve for x
    x = 343,483,811.25/17,671.01
  6. Step 6: Final answer
    x = 19,437.71

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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.