Home / 39,696.57-54,782.42-21,792.74

Finding the Fourth Proportional to 39,696.57, 54,782.42 and 21,792.74

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Solution

The fourth proportional to 39,696.57, 54,782.42 and 21,792.74 is: 30,074.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,696.57 : 54,782.42 = 21,792.74 : x
  2. Step 2: Convert to fraction form
    39,696.57/54,782.42 = 21,792.74/x
  3. Step 3: Cross multiply
    39,696.57x = 54,782.42 × 21,792.74
  4. Step 4: Simplify right side
    39,696.57x = 1,193,858,652.76
  5. Step 5: Solve for x
    x = 1,193,858,652.76/39,696.57
  6. Step 6: Final answer
    x = 30,074.60

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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.