Home / 13,912.86-20,872.92-4,051.92

Finding the Fourth Proportional to 13,912.86, 20,872.92 and 4,051.92

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Solution

The fourth proportional to 13,912.86, 20,872.92 and 4,051.92 is: 6,078.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.86 : 20,872.92 = 4,051.92 : x
  2. Step 2: Convert to fraction form
    13,912.86/20,872.92 = 4,051.92/x
  3. Step 3: Cross multiply
    13,912.86x = 20,872.92 × 4,051.92
  4. Step 4: Simplify right side
    13,912.86x = 84,575,402.01
  5. Step 5: Solve for x
    x = 84,575,402.01/13,912.86
  6. Step 6: Final answer
    x = 6,078.94

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1.5x scale

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.