Home / 20,829.03-31,240.34-6,789.02

Finding the Fourth Proportional to 20,829.03, 31,240.34 and 6,789.02

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Solution

The fourth proportional to 20,829.03, 31,240.34 and 6,789.02 is: 10,182.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.03 : 31,240.34 = 6,789.02 : x
  2. Step 2: Convert to fraction form
    20,829.03/31,240.34 = 6,789.02/x
  3. Step 3: Cross multiply
    20,829.03x = 31,240.34 × 6,789.02
  4. Step 4: Simplify right side
    20,829.03x = 212,091,293.07
  5. Step 5: Solve for x
    x = 212,091,293.07/20,829.03
  6. Step 6: Final answer
    x = 10,182.49

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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.