Home / 33,278-45,918.42-19,128.20

Finding the Fourth Proportional to 33,278, 45,918.42 and 19,128.20

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Solution

The fourth proportional to 33,278, 45,918.42 and 19,128.20 is: 26,393.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,278 : 45,918.42 = 19,128.20 : x
  2. Step 2: Convert to fraction form
    33,278/45,918.42 = 19,128.20/x
  3. Step 3: Cross multiply
    33,278x = 45,918.42 × 19,128.20
  4. Step 4: Simplify right side
    33,278x = 878,336,721.44
  5. Step 5: Solve for x
    x = 878,336,721.44/33,278
  6. Step 6: Final answer
    x = 26,393.92

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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.