Home / 12,231.10-16,885.92-8,051.50

Finding the Fourth Proportional to 12,231.10, 16,885.92 and 8,051.50

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Solution

The fourth proportional to 12,231.10, 16,885.92 and 8,051.50 is: 11,115.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,231.10 : 16,885.92 = 8,051.50 : x
  2. Step 2: Convert to fraction form
    12,231.10/16,885.92 = 8,051.50/x
  3. Step 3: Cross multiply
    12,231.10x = 16,885.92 × 8,051.50
  4. Step 4: Simplify right side
    12,231.10x = 135,956,990.89
  5. Step 5: Solve for x
    x = 135,956,990.89/12,231.10
  6. Step 6: Final answer
    x = 11,115.68

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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.