Home / 43,771.16-65,633.19-13,779.75

Finding the Fourth Proportional to 43,771.16, 65,633.19 and 13,779.75

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Solution

The fourth proportional to 43,771.16, 65,633.19 and 13,779.75 is: 20,662.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,771.16 : 65,633.19 = 13,779.75 : x
  2. Step 2: Convert to fraction form
    43,771.16/65,633.19 = 13,779.75/x
  3. Step 3: Cross multiply
    43,771.16x = 65,633.19 × 13,779.75
  4. Step 4: Simplify right side
    43,771.16x = 904,408,949.90
  5. Step 5: Solve for x
    x = 904,408,949.90/43,771.16
  6. Step 6: Final answer
    x = 20,662.21

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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.