Home / 20,984.60-31,469.56-6,189.60

Finding the Fourth Proportional to 20,984.60, 31,469.56 and 6,189.60

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Solution

The fourth proportional to 20,984.60, 31,469.56 and 6,189.60 is: 9,282.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.60 : 31,469.56 = 6,189.60 : x
  2. Step 2: Convert to fraction form
    20,984.60/31,469.56 = 6,189.60/x
  3. Step 3: Cross multiply
    20,984.60x = 31,469.56 × 6,189.60
  4. Step 4: Simplify right side
    20,984.60x = 194,783,988.58
  5. Step 5: Solve for x
    x = 194,783,988.58/20,984.60
  6. Step 6: Final answer
    x = 9,282.23

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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.