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Finding the Fourth Proportional to 25,408.96, 38,138.04 and 12,270.56

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Solution

The fourth proportional to 25,408.96, 38,138.04 and 12,270.56 is: 18,417.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,408.96 : 38,138.04 = 12,270.56 : x
  2. Step 2: Convert to fraction form
    25,408.96/38,138.04 = 12,270.56/x
  3. Step 3: Cross multiply
    25,408.96x = 38,138.04 × 12,270.56
  4. Step 4: Simplify right side
    25,408.96x = 467,975,108.10
  5. Step 5: Solve for x
    x = 467,975,108.10/25,408.96
  6. Step 6: Final answer
    x = 18,417.72

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.