Home / 12,485.21-17,229.50-6,819.96

Finding the Fourth Proportional to 12,485.21, 17,229.50 and 6,819.96

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Solution

The fourth proportional to 12,485.21, 17,229.50 and 6,819.96 is: 9,411.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.21 : 17,229.50 = 6,819.96 : x
  2. Step 2: Convert to fraction form
    12,485.21/17,229.50 = 6,819.96/x
  3. Step 3: Cross multiply
    12,485.21x = 17,229.50 × 6,819.96
  4. Step 4: Simplify right side
    12,485.21x = 117,504,466.72
  5. Step 5: Solve for x
    x = 117,504,466.72/12,485.21
  6. Step 6: Final answer
    x = 9,411.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.