Home / 21,105.10-29,104.14-13,550.26

Finding the Fourth Proportional to 21,105.10, 29,104.14 and 13,550.26

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Solution

The fourth proportional to 21,105.10, 29,104.14 and 13,550.26 is: 18,685.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,105.10 : 29,104.14 = 13,550.26 : x
  2. Step 2: Convert to fraction form
    21,105.10/29,104.14 = 13,550.26/x
  3. Step 3: Cross multiply
    21,105.10x = 29,104.14 × 13,550.26
  4. Step 4: Simplify right side
    21,105.10x = 394,368,664.08
  5. Step 5: Solve for x
    x = 394,368,664.08/21,105.10
  6. Step 6: Final answer
    x = 18,685.94

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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.