Home / 20,220.60-30,340.31-7,736.51

Finding the Fourth Proportional to 20,220.60, 30,340.31 and 7,736.51

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Solution

The fourth proportional to 20,220.60, 30,340.31 and 7,736.51 is: 11,608.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.60 : 30,340.31 = 7,736.51 : x
  2. Step 2: Convert to fraction form
    20,220.60/30,340.31 = 7,736.51/x
  3. Step 3: Cross multiply
    20,220.60x = 30,340.31 × 7,736.51
  4. Step 4: Simplify right side
    20,220.60x = 234,727,921.33
  5. Step 5: Solve for x
    x = 234,727,921.33/20,220.60
  6. Step 6: Final answer
    x = 11,608.36

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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.