Home / 39,696.18-54,781.37-21,792.84

Finding the Fourth Proportional to 39,696.18, 54,781.37 and 21,792.84

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Solution

The fourth proportional to 39,696.18, 54,781.37 and 21,792.84 is: 30,074.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,696.18 : 54,781.37 = 21,792.84 : x
  2. Step 2: Convert to fraction form
    39,696.18/54,781.37 = 21,792.84/x
  3. Step 3: Cross multiply
    39,696.18x = 54,781.37 × 21,792.84
  4. Step 4: Simplify right side
    39,696.18x = 1,193,841,631.39
  5. Step 5: Solve for x
    x = 1,193,841,631.39/39,696.18
  6. Step 6: Final answer
    x = 30,074.47

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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.