Home / 20,824.76-31,239.74-6,786.21

Finding the Fourth Proportional to 20,824.76, 31,239.74 and 6,786.21

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Solution

The fourth proportional to 20,824.76, 31,239.74 and 6,786.21 is: 10,180.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.76 : 31,239.74 = 6,786.21 : x
  2. Step 2: Convert to fraction form
    20,824.76/31,239.74 = 6,786.21/x
  3. Step 3: Cross multiply
    20,824.76x = 31,239.74 × 6,786.21
  4. Step 4: Simplify right side
    20,824.76x = 211,999,435.99
  5. Step 5: Solve for x
    x = 211,999,435.99/20,824.76
  6. Step 6: Final answer
    x = 10,180.16

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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.