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Finding the Fourth Proportional to 13,291.92, 18,342.64 and 7,626.54

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Solution

The fourth proportional to 13,291.92, 18,342.64 and 7,626.54 is: 10,524.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.92 : 18,342.64 = 7,626.54 : x
  2. Step 2: Convert to fraction form
    13,291.92/18,342.64 = 7,626.54/x
  3. Step 3: Cross multiply
    13,291.92x = 18,342.64 × 7,626.54
  4. Step 4: Simplify right side
    13,291.92x = 139,890,874.26
  5. Step 5: Solve for x
    x = 139,890,874.26/13,291.92
  6. Step 6: Final answer
    x = 10,524.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.