Home / 20,736.96-31,121.84-9,058.38

Finding the Fourth Proportional to 20,736.96, 31,121.84 and 9,058.38

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Solution

The fourth proportional to 20,736.96, 31,121.84 and 9,058.38 is: 13,594.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.96 : 31,121.84 = 9,058.38 : x
  2. Step 2: Convert to fraction form
    20,736.96/31,121.84 = 9,058.38/x
  3. Step 3: Cross multiply
    20,736.96x = 31,121.84 × 9,058.38
  4. Step 4: Simplify right side
    20,736.96x = 281,913,453.02
  5. Step 5: Solve for x
    x = 281,913,453.02/20,736.96
  6. Step 6: Final answer
    x = 13,594.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.