Home / 31,685.59-43,743.46-21,629.03

Finding the Fourth Proportional to 31,685.59, 43,743.46 and 21,629.03

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Solution

The fourth proportional to 31,685.59, 43,743.46 and 21,629.03 is: 29,859.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,685.59 : 43,743.46 = 21,629.03 : x
  2. Step 2: Convert to fraction form
    31,685.59/43,743.46 = 21,629.03/x
  3. Step 3: Cross multiply
    31,685.59x = 43,743.46 × 21,629.03
  4. Step 4: Simplify right side
    31,685.59x = 946,128,608.64
  5. Step 5: Solve for x
    x = 946,128,608.64/31,685.59
  6. Step 6: Final answer
    x = 29,859.91

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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.