Home / 20,940.98-31,411.42-9,093.23

Finding the Fourth Proportional to 20,940.98, 31,411.42 and 9,093.23

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Solution

The fourth proportional to 20,940.98, 31,411.42 and 9,093.23 is: 13,639.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,940.98 : 31,411.42 = 9,093.23 : x
  2. Step 2: Convert to fraction form
    20,940.98/31,411.42 = 9,093.23/x
  3. Step 3: Cross multiply
    20,940.98x = 31,411.42 × 9,093.23
  4. Step 4: Simplify right side
    20,940.98x = 285,631,064.16
  5. Step 5: Solve for x
    x = 285,631,064.16/20,940.98
  6. Step 6: Final answer
    x = 13,639.81

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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.