Home / 33,128.28-45,718.62-18,981.16

Finding the Fourth Proportional to 33,128.28, 45,718.62 and 18,981.16

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Solution

The fourth proportional to 33,128.28, 45,718.62 and 18,981.16 is: 26,194.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,128.28 : 45,718.62 = 18,981.16 : x
  2. Step 2: Convert to fraction form
    33,128.28/45,718.62 = 18,981.16/x
  3. Step 3: Cross multiply
    33,128.28x = 45,718.62 × 18,981.16
  4. Step 4: Simplify right side
    33,128.28x = 867,792,441.20
  5. Step 5: Solve for x
    x = 867,792,441.20/33,128.28
  6. Step 6: Final answer
    x = 26,194.91

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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.