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Finding the Fourth Proportional to 18,393.92, 25,381.84 and 10,325.72

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Solution

The fourth proportional to 18,393.92, 25,381.84 and 10,325.72 is: 14,248.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.92 : 25,381.84 = 10,325.72 : x
  2. Step 2: Convert to fraction form
    18,393.92/25,381.84 = 10,325.72/x
  3. Step 3: Cross multiply
    18,393.92x = 25,381.84 × 10,325.72
  4. Step 4: Simplify right side
    18,393.92x = 262,085,772.92
  5. Step 5: Solve for x
    x = 262,085,772.92/18,393.92
  6. Step 6: Final answer
    x = 14,248.50

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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.