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Finding the Fourth Proportional to 17,557.64, 26,308.78 and 6,449

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Solution

The fourth proportional to 17,557.64, 26,308.78 and 6,449 is: 9,663.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,557.64 : 26,308.78 = 6,449 : x
  2. Step 2: Convert to fraction form
    17,557.64/26,308.78 = 6,449/x
  3. Step 3: Cross multiply
    17,557.64x = 26,308.78 × 6,449
  4. Step 4: Simplify right side
    17,557.64x = 169,665,322.22
  5. Step 5: Solve for x
    x = 169,665,322.22/17,557.64
  6. Step 6: Final answer
    x = 9,663.33

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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.