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Finding the Fourth Proportional to 16,231.96, 22,400.06 and 8,779.96

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Solution

The fourth proportional to 16,231.96, 22,400.06 and 8,779.96 is: 12,116.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,231.96 : 22,400.06 = 8,779.96 : x
  2. Step 2: Convert to fraction form
    16,231.96/22,400.06 = 8,779.96/x
  3. Step 3: Cross multiply
    16,231.96x = 22,400.06 × 8,779.96
  4. Step 4: Simplify right side
    16,231.96x = 196,671,630.80
  5. Step 5: Solve for x
    x = 196,671,630.80/16,231.96
  6. Step 6: Final answer
    x = 12,116.32

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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.