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Finding the Fourth Proportional to 17,551.04, 26,328 and 8,785.28

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Solution

The fourth proportional to 17,551.04, 26,328 and 8,785.28 is: 13,178.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,551.04 : 26,328 = 8,785.28 : x
  2. Step 2: Convert to fraction form
    17,551.04/26,328 = 8,785.28/x
  3. Step 3: Cross multiply
    17,551.04x = 26,328 × 8,785.28
  4. Step 4: Simplify right side
    17,551.04x = 231,298,851.84
  5. Step 5: Solve for x
    x = 231,298,851.84/17,551.04
  6. Step 6: Final answer
    x = 13,178.64

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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.