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Finding the Fourth Proportional to 18,135.99, 25,027.61 and 10,178.19

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Solution

The fourth proportional to 18,135.99, 25,027.61 and 10,178.19 is: 14,045.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.99 : 25,027.61 = 10,178.19 : x
  2. Step 2: Convert to fraction form
    18,135.99/25,027.61 = 10,178.19/x
  3. Step 3: Cross multiply
    18,135.99x = 25,027.61 × 10,178.19
  4. Step 4: Simplify right side
    18,135.99x = 254,735,718.93
  5. Step 5: Solve for x
    x = 254,735,718.93/18,135.99
  6. Step 6: Final answer
    x = 14,045.87

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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.