Home / 12,145.56-16,761.60-6,840.60

Finding the Fourth Proportional to 12,145.56, 16,761.60 and 6,840.60

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Solution

The fourth proportional to 12,145.56, 16,761.60 and 6,840.60 is: 9,440.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.56 : 16,761.60 = 6,840.60 : x
  2. Step 2: Convert to fraction form
    12,145.56/16,761.60 = 6,840.60/x
  3. Step 3: Cross multiply
    12,145.56x = 16,761.60 × 6,840.60
  4. Step 4: Simplify right side
    12,145.56x = 114,659,400.96
  5. Step 5: Solve for x
    x = 114,659,400.96/12,145.56
  6. Step 6: Final answer
    x = 9,440.44

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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.