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Finding the Fourth Proportional to 18,965.33, 26,171.20 and 10,580.21

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Solution

The fourth proportional to 18,965.33, 26,171.20 and 10,580.21 is: 14,600.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.33 : 26,171.20 = 10,580.21 : x
  2. Step 2: Convert to fraction form
    18,965.33/26,171.20 = 10,580.21/x
  3. Step 3: Cross multiply
    18,965.33x = 26,171.20 × 10,580.21
  4. Step 4: Simplify right side
    18,965.33x = 276,896,791.95
  5. Step 5: Solve for x
    x = 276,896,791.95/18,965.33
  6. Step 6: Final answer
    x = 14,600.16

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.