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Finding the Fourth Proportional to 18,966.33, 26,172.59 and 10,581.21

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Solution

The fourth proportional to 18,966.33, 26,172.59 and 10,581.21 is: 14,601.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,966.33 : 26,172.59 = 10,581.21 : x
  2. Step 2: Convert to fraction form
    18,966.33/26,172.59 = 10,581.21/x
  3. Step 3: Cross multiply
    18,966.33x = 26,172.59 × 10,581.21
  4. Step 4: Simplify right side
    18,966.33x = 276,937,618.13
  5. Step 5: Solve for x
    x = 276,937,618.13/18,966.33
  6. Step 6: Final answer
    x = 14,601.54

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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.