Home / 39,637.34-54,696.83-21,728.64

Finding the Fourth Proportional to 39,637.34, 54,696.83 and 21,728.64

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Solution

The fourth proportional to 39,637.34, 54,696.83 and 21,728.64 is: 29,984.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,637.34 : 54,696.83 = 21,728.64 : x
  2. Step 2: Convert to fraction form
    39,637.34/54,696.83 = 21,728.64/x
  3. Step 3: Cross multiply
    39,637.34x = 54,696.83 × 21,728.64
  4. Step 4: Simplify right side
    39,637.34x = 1,188,487,619.57
  5. Step 5: Solve for x
    x = 1,188,487,619.57/39,637.34
  6. Step 6: Final answer
    x = 29,984.04

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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.