Home / 13,778.61-20,667.77-3,916.59

Finding the Fourth Proportional to 13,778.61, 20,667.77 and 3,916.59

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Solution

The fourth proportional to 13,778.61, 20,667.77 and 3,916.59 is: 5,874.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.61 : 20,667.77 = 3,916.59 : x
  2. Step 2: Convert to fraction form
    13,778.61/20,667.77 = 3,916.59/x
  3. Step 3: Cross multiply
    13,778.61x = 20,667.77 × 3,916.59
  4. Step 4: Simplify right side
    13,778.61x = 80,947,120.94
  5. Step 5: Solve for x
    x = 80,947,120.94/13,778.61
  6. Step 6: Final answer
    x = 5,874.84

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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.