Home / 20,839.52-31,258.46-8,355.80

Finding the Fourth Proportional to 20,839.52, 31,258.46 and 8,355.80

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Solution

The fourth proportional to 20,839.52, 31,258.46 and 8,355.80 is: 12,533.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.52 : 31,258.46 = 8,355.80 : x
  2. Step 2: Convert to fraction form
    20,839.52/31,258.46 = 8,355.80/x
  3. Step 3: Cross multiply
    20,839.52x = 31,258.46 × 8,355.80
  4. Step 4: Simplify right side
    20,839.52x = 261,189,440.07
  5. Step 5: Solve for x
    x = 261,189,440.07/20,839.52
  6. Step 6: Final answer
    x = 12,533.37

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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.