Home / 20,984.73-31,477.51-7,834.48

Finding the Fourth Proportional to 20,984.73, 31,477.51 and 7,834.48

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Solution

The fourth proportional to 20,984.73, 31,477.51 and 7,834.48 is: 11,751.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.73 : 31,477.51 = 7,834.48 : x
  2. Step 2: Convert to fraction form
    20,984.73/31,477.51 = 7,834.48/x
  3. Step 3: Cross multiply
    20,984.73x = 31,477.51 × 7,834.48
  4. Step 4: Simplify right side
    20,984.73x = 246,609,922.54
  5. Step 5: Solve for x
    x = 246,609,922.54/20,984.73
  6. Step 6: Final answer
    x = 11,751.87

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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.