Home / 20,861.32-28,801.92-18,619.24

Finding the Fourth Proportional to 20,861.32, 28,801.92 and 18,619.24

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Solution

The fourth proportional to 20,861.32, 28,801.92 and 18,619.24 is: 25,706.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861.32 : 28,801.92 = 18,619.24 : x
  2. Step 2: Convert to fraction form
    20,861.32/28,801.92 = 18,619.24/x
  3. Step 3: Cross multiply
    20,861.32x = 28,801.92 × 18,619.24
  4. Step 4: Simplify right side
    20,861.32x = 536,269,860.94
  5. Step 5: Solve for x
    x = 536,269,860.94/20,861.32
  6. Step 6: Final answer
    x = 25,706.42

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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.