Home / 20,896.42-28,832.94-12,396.95

Finding the Fourth Proportional to 20,896.42, 28,832.94 and 12,396.95

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Solution

The fourth proportional to 20,896.42, 28,832.94 and 12,396.95 is: 17,105.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.42 : 28,832.94 = 12,396.95 : x
  2. Step 2: Convert to fraction form
    20,896.42/28,832.94 = 12,396.95/x
  3. Step 3: Cross multiply
    20,896.42x = 28,832.94 × 12,396.95
  4. Step 4: Simplify right side
    20,896.42x = 357,440,515.53
  5. Step 5: Solve for x
    x = 357,440,515.53/20,896.42
  6. Step 6: Final answer
    x = 17,105.35

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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.