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Finding the Fourth Proportional to 18,408.70, 25,404.16 and 10,342.52

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Solution

The fourth proportional to 18,408.70, 25,404.16 and 10,342.52 is: 14,272.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,408.70 : 25,404.16 = 10,342.52 : x
  2. Step 2: Convert to fraction form
    18,408.70/25,404.16 = 10,342.52/x
  3. Step 3: Cross multiply
    18,408.70x = 25,404.16 × 10,342.52
  4. Step 4: Simplify right side
    18,408.70x = 262,742,854.15
  5. Step 5: Solve for x
    x = 262,742,854.15/18,408.70
  6. Step 6: Final answer
    x = 14,272.76

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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.