Home / 13,910.99-20,871.79-8,368.25

Finding the Fourth Proportional to 13,910.99, 20,871.79 and 8,368.25

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Solution

The fourth proportional to 13,910.99, 20,871.79 and 8,368.25 is: 12,555.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,910.99 : 20,871.79 = 8,368.25 : x
  2. Step 2: Convert to fraction form
    13,910.99/20,871.79 = 8,368.25/x
  3. Step 3: Cross multiply
    13,910.99x = 20,871.79 × 8,368.25
  4. Step 4: Simplify right side
    13,910.99x = 174,660,231.39
  5. Step 5: Solve for x
    x = 174,660,231.39/13,910.99
  6. Step 6: Final answer
    x = 12,555.56

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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.