Home / 21,379.94-29,505.23-11,948.50

Finding the Fourth Proportional to 21,379.94, 29,505.23 and 11,948.50

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Solution

The fourth proportional to 21,379.94, 29,505.23 and 11,948.50 is: 16,489.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.94 : 29,505.23 = 11,948.50 : x
  2. Step 2: Convert to fraction form
    21,379.94/29,505.23 = 11,948.50/x
  3. Step 3: Cross multiply
    21,379.94x = 29,505.23 × 11,948.50
  4. Step 4: Simplify right side
    21,379.94x = 352,543,240.66
  5. Step 5: Solve for x
    x = 352,543,240.66/21,379.94
  6. Step 6: Final answer
    x = 16,489.44

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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.