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Finding the Fourth Proportional to 16,431.88, 22,676.22 and 9,358.34

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Solution

The fourth proportional to 16,431.88, 22,676.22 and 9,358.34 is: 12,914.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,431.88 : 22,676.22 = 9,358.34 : x
  2. Step 2: Convert to fraction form
    16,431.88/22,676.22 = 9,358.34/x
  3. Step 3: Cross multiply
    16,431.88x = 22,676.22 × 9,358.34
  4. Step 4: Simplify right side
    16,431.88x = 212,211,776.67
  5. Step 5: Solve for x
    x = 212,211,776.67/16,431.88
  6. Step 6: Final answer
    x = 12,914.64

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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.