Home / 13,838.10-20,755.80-3,977.16

Finding the Fourth Proportional to 13,838.10, 20,755.80 and 3,977.16

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Solution

The fourth proportional to 13,838.10, 20,755.80 and 3,977.16 is: 5,965.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,838.10 : 20,755.80 = 3,977.16 : x
  2. Step 2: Convert to fraction form
    13,838.10/20,755.80 = 3,977.16/x
  3. Step 3: Cross multiply
    13,838.10x = 20,755.80 × 3,977.16
  4. Step 4: Simplify right side
    13,838.10x = 82,549,137.53
  5. Step 5: Solve for x
    x = 82,549,137.53/13,838.10
  6. Step 6: Final answer
    x = 5,965.35

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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.