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Finding the Fourth Proportional to 12,156.88, 18,268.26 and 6,614.32

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Solution

The fourth proportional to 12,156.88, 18,268.26 and 6,614.32 is: 9,939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.88 : 18,268.26 = 6,614.32 : x
  2. Step 2: Convert to fraction form
    12,156.88/18,268.26 = 6,614.32/x
  3. Step 3: Cross multiply
    12,156.88x = 18,268.26 × 6,614.32
  4. Step 4: Simplify right side
    12,156.88x = 120,832,117.48
  5. Step 5: Solve for x
    x = 120,832,117.48/12,156.88
  6. Step 6: Final answer
    x = 9,939.40

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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.