Home / 20,828.03-31,245.57-6,784.04

Finding the Fourth Proportional to 20,828.03, 31,245.57 and 6,784.04

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Solution

The fourth proportional to 20,828.03, 31,245.57 and 6,784.04 is: 10,177.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,828.03 : 31,245.57 = 6,784.04 : x
  2. Step 2: Convert to fraction form
    20,828.03/31,245.57 = 6,784.04/x
  3. Step 3: Cross multiply
    20,828.03x = 31,245.57 × 6,784.04
  4. Step 4: Simplify right side
    20,828.03x = 211,971,040.47
  5. Step 5: Solve for x
    x = 211,971,040.47/20,828.03
  6. Step 6: Final answer
    x = 10,177.20

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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.