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Finding the Fourth Proportional to 12,055.39, 18,062.92 and 7,890.19

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Solution

The fourth proportional to 12,055.39, 18,062.92 and 7,890.19 is: 11,822.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,055.39 : 18,062.92 = 7,890.19 : x
  2. Step 2: Convert to fraction form
    12,055.39/18,062.92 = 7,890.19/x
  3. Step 3: Cross multiply
    12,055.39x = 18,062.92 × 7,890.19
  4. Step 4: Simplify right side
    12,055.39x = 142,519,870.75
  5. Step 5: Solve for x
    x = 142,519,870.75/12,055.39
  6. Step 6: Final answer
    x = 11,822.09

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.