Home / 21,537.80-29,731.26-20,192.68

Finding the Fourth Proportional to 21,537.80, 29,731.26 and 20,192.68

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Solution

The fourth proportional to 21,537.80, 29,731.26 and 20,192.68 is: 27,874.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,537.80 : 29,731.26 = 20,192.68 : x
  2. Step 2: Convert to fraction form
    21,537.80/29,731.26 = 20,192.68/x
  3. Step 3: Cross multiply
    21,537.80x = 29,731.26 × 20,192.68
  4. Step 4: Simplify right side
    21,537.80x = 600,353,819.18
  5. Step 5: Solve for x
    x = 600,353,819.18/21,537.80
  6. Step 6: Final answer
    x = 27,874.43

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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.