Home / 13,890.84-20,826.22-8,255.16

Finding the Fourth Proportional to 13,890.84, 20,826.22 and 8,255.16

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Solution

The fourth proportional to 13,890.84, 20,826.22 and 8,255.16 is: 12,376.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.84 : 20,826.22 = 8,255.16 : x
  2. Step 2: Convert to fraction form
    13,890.84/20,826.22 = 8,255.16/x
  3. Step 3: Cross multiply
    13,890.84x = 20,826.22 × 8,255.16
  4. Step 4: Simplify right side
    13,890.84x = 171,923,778.30
  5. Step 5: Solve for x
    x = 171,923,778.30/13,890.84
  6. Step 6: Final answer
    x = 12,376.77

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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.