Home / 20,422.53-28,162.35-19,231.95

Finding the Fourth Proportional to 20,422.53, 28,162.35 and 19,231.95

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Solution

The fourth proportional to 20,422.53, 28,162.35 and 19,231.95 is: 26,520.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.53 : 28,162.35 = 19,231.95 : x
  2. Step 2: Convert to fraction form
    20,422.53/28,162.35 = 19,231.95/x
  3. Step 3: Cross multiply
    20,422.53x = 28,162.35 × 19,231.95
  4. Step 4: Simplify right side
    20,422.53x = 541,616,907.08
  5. Step 5: Solve for x
    x = 541,616,907.08/20,422.53
  6. Step 6: Final answer
    x = 26,520.56

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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.