Home / 21,379.47-29,506.46-11,949.99

Finding the Fourth Proportional to 21,379.47, 29,506.46 and 11,949.99

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Solution

The fourth proportional to 21,379.47, 29,506.46 and 11,949.99 is: 16,492.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.47 : 29,506.46 = 11,949.99 : x
  2. Step 2: Convert to fraction form
    21,379.47/29,506.46 = 11,949.99/x
  3. Step 3: Cross multiply
    21,379.47x = 29,506.46 × 11,949.99
  4. Step 4: Simplify right side
    21,379.47x = 352,601,842.19
  5. Step 5: Solve for x
    x = 352,601,842.19/21,379.47
  6. Step 6: Final answer
    x = 16,492.54

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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.