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Finding the Fourth Proportional to 18,855.16, 26,022.56 and 11,403.16

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Solution

The fourth proportional to 18,855.16, 26,022.56 and 11,403.16 is: 15,737.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.16 : 26,022.56 = 11,403.16 : x
  2. Step 2: Convert to fraction form
    18,855.16/26,022.56 = 11,403.16/x
  3. Step 3: Cross multiply
    18,855.16x = 26,022.56 × 11,403.16
  4. Step 4: Simplify right side
    18,855.16x = 296,739,415.29
  5. Step 5: Solve for x
    x = 296,739,415.29/18,855.16
  6. Step 6: Final answer
    x = 15,737.84

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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.