Home / 21,380.92-29,505.16-11,950.36

Finding the Fourth Proportional to 21,380.92, 29,505.16 and 11,950.36

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Solution

The fourth proportional to 21,380.92, 29,505.16 and 11,950.36 is: 16,491.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.92 : 29,505.16 = 11,950.36 : x
  2. Step 2: Convert to fraction form
    21,380.92/29,505.16 = 11,950.36/x
  3. Step 3: Cross multiply
    21,380.92x = 29,505.16 × 11,950.36
  4. Step 4: Simplify right side
    21,380.92x = 352,597,283.86
  5. Step 5: Solve for x
    x = 352,597,283.86/21,380.92
  6. Step 6: Final answer
    x = 16,491.21

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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.