Home / 21,786.12-30,022.68-14,700.24

Finding the Fourth Proportional to 21,786.12, 30,022.68 and 14,700.24

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Solution

The fourth proportional to 21,786.12, 30,022.68 and 14,700.24 is: 20,257.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,786.12 : 30,022.68 = 14,700.24 : x
  2. Step 2: Convert to fraction form
    21,786.12/30,022.68 = 14,700.24/x
  3. Step 3: Cross multiply
    21,786.12x = 30,022.68 × 14,700.24
  4. Step 4: Simplify right side
    21,786.12x = 441,340,601.44
  5. Step 5: Solve for x
    x = 441,340,601.44/21,786.12
  6. Step 6: Final answer
    x = 20,257.88

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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.