Home / 13,914.30-20,878.31-6,517.48

Finding the Fourth Proportional to 13,914.30, 20,878.31 and 6,517.48

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Solution

The fourth proportional to 13,914.30, 20,878.31 and 6,517.48 is: 9,779.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,914.30 : 20,878.31 = 6,517.48 : x
  2. Step 2: Convert to fraction form
    13,914.30/20,878.31 = 6,517.48/x
  3. Step 3: Cross multiply
    13,914.30x = 20,878.31 × 6,517.48
  4. Step 4: Simplify right side
    13,914.30x = 136,073,967.86
  5. Step 5: Solve for x
    x = 136,073,967.86/13,914.30
  6. Step 6: Final answer
    x = 9,779.43

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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.