Home / 13,911.75-20,868.84-3,523.50

Finding the Fourth Proportional to 13,911.75, 20,868.84 and 3,523.50

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Solution

The fourth proportional to 13,911.75, 20,868.84 and 3,523.50 is: 5,285.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.75 : 20,868.84 = 3,523.50 : x
  2. Step 2: Convert to fraction form
    13,911.75/20,868.84 = 3,523.50/x
  3. Step 3: Cross multiply
    13,911.75x = 20,868.84 × 3,523.50
  4. Step 4: Simplify right side
    13,911.75x = 73,531,357.74
  5. Step 5: Solve for x
    x = 73,531,357.74/13,911.75
  6. Step 6: Final answer
    x = 5,285.56

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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.