Home / 33,128.81-45,707.44-18,787.51

Finding the Fourth Proportional to 33,128.81, 45,707.44 and 18,787.51

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Solution

The fourth proportional to 33,128.81, 45,707.44 and 18,787.51 is: 25,920.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,128.81 : 45,707.44 = 18,787.51 : x
  2. Step 2: Convert to fraction form
    33,128.81/45,707.44 = 18,787.51/x
  3. Step 3: Cross multiply
    33,128.81x = 45,707.44 × 18,787.51
  4. Step 4: Simplify right side
    33,128.81x = 858,728,986.07
  5. Step 5: Solve for x
    x = 858,728,986.07/33,128.81
  6. Step 6: Final answer
    x = 25,920.91

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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.