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Finding the Fourth Proportional to 18,626.88, 25,705.28 and 10,243.52

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Solution

The fourth proportional to 18,626.88, 25,705.28 and 10,243.52 is: 14,136.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.88 : 25,705.28 = 10,243.52 : x
  2. Step 2: Convert to fraction form
    18,626.88/25,705.28 = 10,243.52/x
  3. Step 3: Cross multiply
    18,626.88x = 25,705.28 × 10,243.52
  4. Step 4: Simplify right side
    18,626.88x = 263,312,549.79
  5. Step 5: Solve for x
    x = 263,312,549.79/18,626.88
  6. Step 6: Final answer
    x = 14,136.16

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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.