Home / 21,104.57-29,137.59-13,553.96

Finding the Fourth Proportional to 21,104.57, 29,137.59 and 13,553.96

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Solution

The fourth proportional to 21,104.57, 29,137.59 and 13,553.96 is: 18,712.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104.57 : 29,137.59 = 13,553.96 : x
  2. Step 2: Convert to fraction form
    21,104.57/29,137.59 = 13,553.96/x
  3. Step 3: Cross multiply
    21,104.57x = 29,137.59 × 13,553.96
  4. Step 4: Simplify right side
    21,104.57x = 394,929,583.67
  5. Step 5: Solve for x
    x = 394,929,583.67/21,104.57
  6. Step 6: Final answer
    x = 18,712.99

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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.