Home / 20,627.40-30,954.06-12,840.60

Finding the Fourth Proportional to 20,627.40, 30,954.06 and 12,840.60

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Solution

The fourth proportional to 20,627.40, 30,954.06 and 12,840.60 is: 19,268.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.40 : 30,954.06 = 12,840.60 : x
  2. Step 2: Convert to fraction form
    20,627.40/30,954.06 = 12,840.60/x
  3. Step 3: Cross multiply
    20,627.40x = 30,954.06 × 12,840.60
  4. Step 4: Simplify right side
    20,627.40x = 397,468,702.84
  5. Step 5: Solve for x
    x = 397,468,702.84/20,627.40
  6. Step 6: Final answer
    x = 19,268.97

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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.