Home / 13,611.36-20,417.84-5,288.60

Finding the Fourth Proportional to 13,611.36, 20,417.84 and 5,288.60

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Solution

The fourth proportional to 13,611.36, 20,417.84 and 5,288.60 is: 7,933.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.36 : 20,417.84 = 5,288.60 : x
  2. Step 2: Convert to fraction form
    13,611.36/20,417.84 = 5,288.60/x
  3. Step 3: Cross multiply
    13,611.36x = 20,417.84 × 5,288.60
  4. Step 4: Simplify right side
    13,611.36x = 107,981,788.62
  5. Step 5: Solve for x
    x = 107,981,788.62/13,611.36
  6. Step 6: Final answer
    x = 7,933.21

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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.