Home / 21,646.87-29,872.39-12,086.92

Finding the Fourth Proportional to 21,646.87, 29,872.39 and 12,086.92

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Solution

The fourth proportional to 21,646.87, 29,872.39 and 12,086.92 is: 16,679.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,646.87 : 29,872.39 = 12,086.92 : x
  2. Step 2: Convert to fraction form
    21,646.87/29,872.39 = 12,086.92/x
  3. Step 3: Cross multiply
    21,646.87x = 29,872.39 × 12,086.92
  4. Step 4: Simplify right side
    21,646.87x = 361,065,197.41
  5. Step 5: Solve for x
    x = 361,065,197.41/21,646.87
  6. Step 6: Final answer
    x = 16,679.79

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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.