Home / 13,623.31-20,391.22-9,172.77

Finding the Fourth Proportional to 13,623.31, 20,391.22 and 9,172.77

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Solution

The fourth proportional to 13,623.31, 20,391.22 and 9,172.77 is: 13,729.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,623.31 : 20,391.22 = 9,172.77 : x
  2. Step 2: Convert to fraction form
    13,623.31/20,391.22 = 9,172.77/x
  3. Step 3: Cross multiply
    13,623.31x = 20,391.22 × 9,172.77
  4. Step 4: Simplify right side
    13,623.31x = 187,043,906.08
  5. Step 5: Solve for x
    x = 187,043,906.08/13,623.31
  6. Step 6: Final answer
    x = 13,729.69

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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.