Home / 20,029.51-30,039.60-7,550.78

Finding the Fourth Proportional to 20,029.51, 30,039.60 and 7,550.78

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Solution

The fourth proportional to 20,029.51, 30,039.60 and 7,550.78 is: 11,324.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,029.51 : 30,039.60 = 7,550.78 : x
  2. Step 2: Convert to fraction form
    20,029.51/30,039.60 = 7,550.78/x
  3. Step 3: Cross multiply
    20,029.51x = 30,039.60 × 7,550.78
  4. Step 4: Simplify right side
    20,029.51x = 226,822,410.89
  5. Step 5: Solve for x
    x = 226,822,410.89/20,029.51
  6. Step 6: Final answer
    x = 11,324.41

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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.