Home / 20,564.68-28,376.19-11,611.99

Finding the Fourth Proportional to 20,564.68, 28,376.19 and 11,611.99

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Solution

The fourth proportional to 20,564.68, 28,376.19 and 11,611.99 is: 16,022.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564.68 : 28,376.19 = 11,611.99 : x
  2. Step 2: Convert to fraction form
    20,564.68/28,376.19 = 11,611.99/x
  3. Step 3: Cross multiply
    20,564.68x = 28,376.19 × 11,611.99
  4. Step 4: Simplify right side
    20,564.68x = 329,504,034.52
  5. Step 5: Solve for x
    x = 329,504,034.52/20,564.68
  6. Step 6: Final answer
    x = 16,022.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.