Home / 21,827.88-30,122.70-12,396.64

Finding the Fourth Proportional to 21,827.88, 30,122.70 and 12,396.64

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Solution

The fourth proportional to 21,827.88, 30,122.70 and 12,396.64 is: 17,107.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,827.88 : 30,122.70 = 12,396.64 : x
  2. Step 2: Convert to fraction form
    21,827.88/30,122.70 = 12,396.64/x
  3. Step 3: Cross multiply
    21,827.88x = 30,122.70 × 12,396.64
  4. Step 4: Simplify right side
    21,827.88x = 373,420,267.73
  5. Step 5: Solve for x
    x = 373,420,267.73/21,827.88
  6. Step 6: Final answer
    x = 17,107.49

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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.