Home / 38,936.80-53,731.66-21,940.74

Finding the Fourth Proportional to 38,936.80, 53,731.66 and 21,940.74

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Solution

The fourth proportional to 38,936.80, 53,731.66 and 21,940.74 is: 30,277.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,936.80 : 53,731.66 = 21,940.74 : x
  2. Step 2: Convert to fraction form
    38,936.80/53,731.66 = 21,940.74/x
  3. Step 3: Cross multiply
    38,936.80x = 53,731.66 × 21,940.74
  4. Step 4: Simplify right side
    38,936.80x = 1,178,912,381.83
  5. Step 5: Solve for x
    x = 1,178,912,381.83/38,936.80
  6. Step 6: Final answer
    x = 30,277.59

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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.