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Finding the Fourth Proportional to 18,641.36, 27,956 and 6,158.48

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Solution

The fourth proportional to 18,641.36, 27,956 and 6,158.48 is: 9,235.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,641.36 : 27,956 = 6,158.48 : x
  2. Step 2: Convert to fraction form
    18,641.36/27,956 = 6,158.48/x
  3. Step 3: Cross multiply
    18,641.36x = 27,956 × 6,158.48
  4. Step 4: Simplify right side
    18,641.36x = 172,166,466.88
  5. Step 5: Solve for x
    x = 172,166,466.88/18,641.36
  6. Step 6: Final answer
    x = 9,235.72

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Why These Related Problems?

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