Home / 13,909.75-20,865.53-6,118.56

Finding the Fourth Proportional to 13,909.75, 20,865.53 and 6,118.56

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Solution

The fourth proportional to 13,909.75, 20,865.53 and 6,118.56 is: 9,178.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.75 : 20,865.53 = 6,118.56 : x
  2. Step 2: Convert to fraction form
    13,909.75/20,865.53 = 6,118.56/x
  3. Step 3: Cross multiply
    13,909.75x = 20,865.53 × 6,118.56
  4. Step 4: Simplify right side
    13,909.75x = 127,667,012.53
  5. Step 5: Solve for x
    x = 127,667,012.53/13,909.75
  6. Step 6: Final answer
    x = 9,178.24

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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.