Home / 20,286.80-28,014.95-19,182.37

Finding the Fourth Proportional to 20,286.80, 28,014.95 and 19,182.37

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Solution

The fourth proportional to 20,286.80, 28,014.95 and 19,182.37 is: 26,489.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.80 : 28,014.95 = 19,182.37 : x
  2. Step 2: Convert to fraction form
    20,286.80/28,014.95 = 19,182.37/x
  3. Step 3: Cross multiply
    20,286.80x = 28,014.95 × 19,182.37
  4. Step 4: Simplify right side
    20,286.80x = 537,393,136.43
  5. Step 5: Solve for x
    x = 537,393,136.43/20,286.80
  6. Step 6: Final answer
    x = 26,489.79

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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.