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Finding the Fourth Proportional to 30,850.40, 46,248.60 and 20,957.60

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Solution

The fourth proportional to 30,850.40, 46,248.60 and 20,957.60 is: 31,418.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,850.40 : 46,248.60 = 20,957.60 : x
  2. Step 2: Convert to fraction form
    30,850.40/46,248.60 = 20,957.60/x
  3. Step 3: Cross multiply
    30,850.40x = 46,248.60 × 20,957.60
  4. Step 4: Simplify right side
    30,850.40x = 969,259,659.36
  5. Step 5: Solve for x
    x = 969,259,659.36/30,850.40
  6. Step 6: Final answer
    x = 31,418.06

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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.