Home / 21,379.50-29,504.34-11,948.09

Finding the Fourth Proportional to 21,379.50, 29,504.34 and 11,948.09

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Solution

The fourth proportional to 21,379.50, 29,504.34 and 11,948.09 is: 16,488.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.50 : 29,504.34 = 11,948.09 : x
  2. Step 2: Convert to fraction form
    21,379.50/29,504.34 = 11,948.09/x
  3. Step 3: Cross multiply
    21,379.50x = 29,504.34 × 11,948.09
  4. Step 4: Simplify right side
    21,379.50x = 352,520,362.19
  5. Step 5: Solve for x
    x = 352,520,362.19/21,379.50
  6. Step 6: Final answer
    x = 16,488.71

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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.