Home / 20,813.96-28,745.06-17,975.72

Finding the Fourth Proportional to 20,813.96, 28,745.06 and 17,975.72

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Solution

The fourth proportional to 20,813.96, 28,745.06 and 17,975.72 is: 24,825.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,813.96 : 28,745.06 = 17,975.72 : x
  2. Step 2: Convert to fraction form
    20,813.96/28,745.06 = 17,975.72/x
  3. Step 3: Cross multiply
    20,813.96x = 28,745.06 × 17,975.72
  4. Step 4: Simplify right side
    20,813.96x = 516,713,149.94
  5. Step 5: Solve for x
    x = 516,713,149.94/20,813.96
  6. Step 6: Final answer
    x = 24,825.32

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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.