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Finding the Fourth Proportional to 18,406.92, 25,398.78 and 10,339.03

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Solution

The fourth proportional to 18,406.92, 25,398.78 and 10,339.03 is: 14,266.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,406.92 : 25,398.78 = 10,339.03 : x
  2. Step 2: Convert to fraction form
    18,406.92/25,398.78 = 10,339.03/x
  3. Step 3: Cross multiply
    18,406.92x = 25,398.78 × 10,339.03
  4. Step 4: Simplify right side
    18,406.92x = 262,598,646.12
  5. Step 5: Solve for x
    x = 262,598,646.12/18,406.92
  6. Step 6: Final answer
    x = 14,266.30

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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.