Home / 13,933.85-20,904.64-5,611.91

Finding the Fourth Proportional to 13,933.85, 20,904.64 and 5,611.91

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Solution

The fourth proportional to 13,933.85, 20,904.64 and 5,611.91 is: 8,419.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,933.85 : 20,904.64 = 5,611.91 : x
  2. Step 2: Convert to fraction form
    13,933.85/20,904.64 = 5,611.91/x
  3. Step 3: Cross multiply
    13,933.85x = 20,904.64 × 5,611.91
  4. Step 4: Simplify right side
    13,933.85x = 117,314,996.49
  5. Step 5: Solve for x
    x = 117,314,996.49/13,933.85
  6. Step 6: Final answer
    x = 8,419.43

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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.