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Finding the Fourth Proportional to 18,339.99, 25,304.98 and 10,380.48

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Solution

The fourth proportional to 18,339.99, 25,304.98 and 10,380.48 is: 14,322.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.99 : 25,304.98 = 10,380.48 : x
  2. Step 2: Convert to fraction form
    18,339.99/25,304.98 = 10,380.48/x
  3. Step 3: Cross multiply
    18,339.99x = 25,304.98 × 10,380.48
  4. Step 4: Simplify right side
    18,339.99x = 262,677,838.79
  5. Step 5: Solve for x
    x = 262,677,838.79/18,339.99
  6. Step 6: Final answer
    x = 14,322.68

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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.