Home / 28,538.62-39,380.61-19,321.42

Finding the Fourth Proportional to 28,538.62, 39,380.61 and 19,321.42

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Solution

The fourth proportional to 28,538.62, 39,380.61 and 19,321.42 is: 26,661.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,538.62 : 39,380.61 = 19,321.42 : x
  2. Step 2: Convert to fraction form
    28,538.62/39,380.61 = 19,321.42/x
  3. Step 3: Cross multiply
    28,538.62x = 39,380.61 × 19,321.42
  4. Step 4: Simplify right side
    28,538.62x = 760,889,190.48
  5. Step 5: Solve for x
    x = 760,889,190.48/28,538.62
  6. Step 6: Final answer
    x = 26,661.74

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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.