Home / 30,879.09-42,597.43-19,529.51

Finding the Fourth Proportional to 30,879.09, 42,597.43 and 19,529.51

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Solution

The fourth proportional to 30,879.09, 42,597.43 and 19,529.51 is: 26,940.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,879.09 : 42,597.43 = 19,529.51 : x
  2. Step 2: Convert to fraction form
    30,879.09/42,597.43 = 19,529.51/x
  3. Step 3: Cross multiply
    30,879.09x = 42,597.43 × 19,529.51
  4. Step 4: Simplify right side
    30,879.09x = 831,906,673.35
  5. Step 5: Solve for x
    x = 831,906,673.35/30,879.09
  6. Step 6: Final answer
    x = 26,940.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.