Home / 20,982.36-31,473.62-7,834.59

Finding the Fourth Proportional to 20,982.36, 31,473.62 and 7,834.59

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Solution

The fourth proportional to 20,982.36, 31,473.62 and 7,834.59 is: 11,751.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.36 : 31,473.62 = 7,834.59 : x
  2. Step 2: Convert to fraction form
    20,982.36/31,473.62 = 7,834.59/x
  3. Step 3: Cross multiply
    20,982.36x = 31,473.62 × 7,834.59
  4. Step 4: Simplify right side
    20,982.36x = 246,582,869.34
  5. Step 5: Solve for x
    x = 246,582,869.34/20,982.36
  6. Step 6: Final answer
    x = 11,751.91

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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.