Home / 39,697.65-54,782.99-21,792.80

Finding the Fourth Proportional to 39,697.65, 54,782.99 and 21,792.80

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Solution

The fourth proportional to 39,697.65, 54,782.99 and 21,792.80 is: 30,074.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,697.65 : 54,782.99 = 21,792.80 : x
  2. Step 2: Convert to fraction form
    39,697.65/54,782.99 = 21,792.80/x
  3. Step 3: Cross multiply
    39,697.65x = 54,782.99 × 21,792.80
  4. Step 4: Simplify right side
    39,697.65x = 1,193,874,361.59
  5. Step 5: Solve for x
    x = 1,193,874,361.59/39,697.65
  6. Step 6: Final answer
    x = 30,074.18

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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.