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Finding the Fourth Proportional to 18,764.66, 28,287.57 and 17,496.26

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Solution

The fourth proportional to 18,764.66, 28,287.57 and 17,496.26 is: 26,375.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,764.66 : 28,287.57 = 17,496.26 : x
  2. Step 2: Convert to fraction form
    18,764.66/28,287.57 = 17,496.26/x
  3. Step 3: Cross multiply
    18,764.66x = 28,287.57 × 17,496.26
  4. Step 4: Simplify right side
    18,764.66x = 494,926,679.49
  5. Step 5: Solve for x
    x = 494,926,679.49/18,764.66
  6. Step 6: Final answer
    x = 26,375.47

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.