Home / 20,885.35-31,334.52-6,845.50

Finding the Fourth Proportional to 20,885.35, 31,334.52 and 6,845.50

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Solution

The fourth proportional to 20,885.35, 31,334.52 and 6,845.50 is: 10,270.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.35 : 31,334.52 = 6,845.50 : x
  2. Step 2: Convert to fraction form
    20,885.35/31,334.52 = 6,845.50/x
  3. Step 3: Cross multiply
    20,885.35x = 31,334.52 × 6,845.50
  4. Step 4: Simplify right side
    20,885.35x = 214,500,378.32
  5. Step 5: Solve for x
    x = 214,500,378.32/20,885.35
  6. Step 6: Final answer
    x = 10,270.38

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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.