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Finding the Fourth Proportional to 18,197.70, 25,111.03 and 10,239.75

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Solution

The fourth proportional to 18,197.70, 25,111.03 and 10,239.75 is: 14,129.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,197.70 : 25,111.03 = 10,239.75 : x
  2. Step 2: Convert to fraction form
    18,197.70/25,111.03 = 10,239.75/x
  3. Step 3: Cross multiply
    18,197.70x = 25,111.03 × 10,239.75
  4. Step 4: Simplify right side
    18,197.70x = 257,130,669.44
  5. Step 5: Solve for x
    x = 257,130,669.44/18,197.70
  6. Step 6: Final answer
    x = 14,129.84

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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.