Home / 21,382.12-29,507.25-11,950.68

Finding the Fourth Proportional to 21,382.12, 29,507.25 and 11,950.68

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Solution

The fourth proportional to 21,382.12, 29,507.25 and 11,950.68 is: 16,491.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,382.12 : 29,507.25 = 11,950.68 : x
  2. Step 2: Convert to fraction form
    21,382.12/29,507.25 = 11,950.68/x
  3. Step 3: Cross multiply
    21,382.12x = 29,507.25 × 11,950.68
  4. Step 4: Simplify right side
    21,382.12x = 352,631,857.90
  5. Step 5: Solve for x
    x = 352,631,857.90/21,382.12
  6. Step 6: Final answer
    x = 16,491.90

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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.