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Finding the Fourth Proportional to 17,879.81, 26,809.29 and 5,396.09

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Solution

The fourth proportional to 17,879.81, 26,809.29 and 5,396.09 is: 8,090.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,879.81 : 26,809.29 = 5,396.09 : x
  2. Step 2: Convert to fraction form
    17,879.81/26,809.29 = 5,396.09/x
  3. Step 3: Cross multiply
    17,879.81x = 26,809.29 × 5,396.09
  4. Step 4: Simplify right side
    17,879.81x = 144,665,207.63
  5. Step 5: Solve for x
    x = 144,665,207.63/17,879.81
  6. Step 6: Final answer
    x = 8,090.98

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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.