Home / 10,786.40-16,181.60-4,212.19

Finding the Fourth Proportional to 10,786.40, 16,181.60 and 4,212.19

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Solution

The fourth proportional to 10,786.40, 16,181.60 and 4,212.19 is: 6,319.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,786.40 : 16,181.60 = 4,212.19 : x
  2. Step 2: Convert to fraction form
    10,786.40/16,181.60 = 4,212.19/x
  3. Step 3: Cross multiply
    10,786.40x = 16,181.60 × 4,212.19
  4. Step 4: Simplify right side
    10,786.40x = 68,159,973.70
  5. Step 5: Solve for x
    x = 68,159,973.70/10,786.40
  6. Step 6: Final answer
    x = 6,319.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.