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Finding the Fourth Proportional to 18,766.88, 25,887 and 12,393.52

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Solution

The fourth proportional to 18,766.88, 25,887 and 12,393.52 is: 17,095.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,766.88 : 25,887 = 12,393.52 : x
  2. Step 2: Convert to fraction form
    18,766.88/25,887 = 12,393.52/x
  3. Step 3: Cross multiply
    18,766.88x = 25,887 × 12,393.52
  4. Step 4: Simplify right side
    18,766.88x = 320,831,052.24
  5. Step 5: Solve for x
    x = 320,831,052.24/18,766.88
  6. Step 6: Final answer
    x = 17,095.60

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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.