Home / 13,611.15-20,419.97-5,709.33

Finding the Fourth Proportional to 13,611.15, 20,419.97 and 5,709.33

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Solution

The fourth proportional to 13,611.15, 20,419.97 and 5,709.33 is: 8,565.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.15 : 20,419.97 = 5,709.33 : x
  2. Step 2: Convert to fraction form
    13,611.15/20,419.97 = 5,709.33/x
  3. Step 3: Cross multiply
    13,611.15x = 20,419.97 × 5,709.33
  4. Step 4: Simplify right side
    13,611.15x = 116,584,318.77
  5. Step 5: Solve for x
    x = 116,584,318.77/13,611.15
  6. Step 6: Final answer
    x = 8,565.35

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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.