Home / 20,629.50-28,476.09-12,246

Finding the Fourth Proportional to 20,629.50, 28,476.09 and 12,246

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Solution

The fourth proportional to 20,629.50, 28,476.09 and 12,246 is: 16,903.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.50 : 28,476.09 = 12,246 : x
  2. Step 2: Convert to fraction form
    20,629.50/28,476.09 = 12,246/x
  3. Step 3: Cross multiply
    20,629.50x = 28,476.09 × 12,246
  4. Step 4: Simplify right side
    20,629.50x = 348,718,198.14
  5. Step 5: Solve for x
    x = 348,718,198.14/20,629.50
  6. Step 6: Final answer
    x = 16,903.86

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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.