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Finding the Fourth Proportional to 17,398.53, 26,078.76 and 8,965.56

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Solution

The fourth proportional to 17,398.53, 26,078.76 and 8,965.56 is: 13,438.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,398.53 : 26,078.76 = 8,965.56 : x
  2. Step 2: Convert to fraction form
    17,398.53/26,078.76 = 8,965.56/x
  3. Step 3: Cross multiply
    17,398.53x = 26,078.76 × 8,965.56
  4. Step 4: Simplify right side
    17,398.53x = 233,810,687.51
  5. Step 5: Solve for x
    x = 233,810,687.51/17,398.53
  6. Step 6: Final answer
    x = 13,438.53

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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.