Home / 13,894.41-20,840.88-3,899.85

Finding the Fourth Proportional to 13,894.41, 20,840.88 and 3,899.85

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Solution

The fourth proportional to 13,894.41, 20,840.88 and 3,899.85 is: 5,849.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,894.41 : 20,840.88 = 3,899.85 : x
  2. Step 2: Convert to fraction form
    13,894.41/20,840.88 = 3,899.85/x
  3. Step 3: Cross multiply
    13,894.41x = 20,840.88 × 3,899.85
  4. Step 4: Simplify right side
    13,894.41x = 81,276,305.87
  5. Step 5: Solve for x
    x = 81,276,305.87/13,894.41
  6. Step 6: Final answer
    x = 5,849.57

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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.