Home / 13,895.64-20,847.96-5,131.80

Finding the Fourth Proportional to 13,895.64, 20,847.96 and 5,131.80

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Solution

The fourth proportional to 13,895.64, 20,847.96 and 5,131.80 is: 7,699.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,895.64 : 20,847.96 = 5,131.80 : x
  2. Step 2: Convert to fraction form
    13,895.64/20,847.96 = 5,131.80/x
  3. Step 3: Cross multiply
    13,895.64x = 20,847.96 × 5,131.80
  4. Step 4: Simplify right side
    13,895.64x = 106,987,561.13
  5. Step 5: Solve for x
    x = 106,987,561.13/13,895.64
  6. Step 6: Final answer
    x = 7,699.36

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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.