Home / 21,158.68-29,198.94-11,727.32

Finding the Fourth Proportional to 21,158.68, 29,198.94 and 11,727.32

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Solution

The fourth proportional to 21,158.68, 29,198.94 and 11,727.32 is: 16,183.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.68 : 29,198.94 = 11,727.32 : x
  2. Step 2: Convert to fraction form
    21,158.68/29,198.94 = 11,727.32/x
  3. Step 3: Cross multiply
    21,158.68x = 29,198.94 × 11,727.32
  4. Step 4: Simplify right side
    21,158.68x = 342,425,313.04
  5. Step 5: Solve for x
    x = 342,425,313.04/21,158.68
  6. Step 6: Final answer
    x = 16,183.68

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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.