Home / 20,414.28-28,174.78-12,461.11

Finding the Fourth Proportional to 20,414.28, 28,174.78 and 12,461.11

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Solution

The fourth proportional to 20,414.28, 28,174.78 and 12,461.11 is: 17,198.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.28 : 28,174.78 = 12,461.11 : x
  2. Step 2: Convert to fraction form
    20,414.28/28,174.78 = 12,461.11/x
  3. Step 3: Cross multiply
    20,414.28x = 28,174.78 × 12,461.11
  4. Step 4: Simplify right side
    20,414.28x = 351,089,032.81
  5. Step 5: Solve for x
    x = 351,089,032.81/20,414.28
  6. Step 6: Final answer
    x = 17,198.21

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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.