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Finding the Fourth Proportional to 13,372.22, 18,447.54 and 8,658.02

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Solution

The fourth proportional to 13,372.22, 18,447.54 and 8,658.02 is: 11,944.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,372.22 : 18,447.54 = 8,658.02 : x
  2. Step 2: Convert to fraction form
    13,372.22/18,447.54 = 8,658.02/x
  3. Step 3: Cross multiply
    13,372.22x = 18,447.54 × 8,658.02
  4. Step 4: Simplify right side
    13,372.22x = 159,719,170.27
  5. Step 5: Solve for x
    x = 159,719,170.27/13,372.22
  6. Step 6: Final answer
    x = 11,944.10

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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.