Home / 28,705.06-43,086.78-20,394.46

Finding the Fourth Proportional to 28,705.06, 43,086.78 and 20,394.46

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Solution

The fourth proportional to 28,705.06, 43,086.78 and 20,394.46 is: 30,612.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,705.06 : 43,086.78 = 20,394.46 : x
  2. Step 2: Convert to fraction form
    28,705.06/43,086.78 = 20,394.46/x
  3. Step 3: Cross multiply
    28,705.06x = 43,086.78 × 20,394.46
  4. Step 4: Simplify right side
    28,705.06x = 878,731,611.24
  5. Step 5: Solve for x
    x = 878,731,611.24/28,705.06
  6. Step 6: Final answer
    x = 30,612.43

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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.