Home / 21,766.79-30,039.96-12,206.50

Finding the Fourth Proportional to 21,766.79, 30,039.96 and 12,206.50

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Solution

The fourth proportional to 21,766.79, 30,039.96 and 12,206.50 is: 16,845.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,766.79 : 30,039.96 = 12,206.50 : x
  2. Step 2: Convert to fraction form
    21,766.79/30,039.96 = 12,206.50/x
  3. Step 3: Cross multiply
    21,766.79x = 30,039.96 × 12,206.50
  4. Step 4: Simplify right side
    21,766.79x = 366,682,742.41
  5. Step 5: Solve for x
    x = 366,682,742.41/21,766.79
  6. Step 6: Final answer
    x = 16,845.97

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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.