Home / 38,936.45-53,731.19-21,940.40

Finding the Fourth Proportional to 38,936.45, 53,731.19 and 21,940.40

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Solution

The fourth proportional to 38,936.45, 53,731.19 and 21,940.40 is: 30,277.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,936.45 : 53,731.19 = 21,940.40 : x
  2. Step 2: Convert to fraction form
    38,936.45/53,731.19 = 21,940.40/x
  3. Step 3: Cross multiply
    38,936.45x = 53,731.19 × 21,940.40
  4. Step 4: Simplify right side
    38,936.45x = 1,178,883,422.72
  5. Step 5: Solve for x
    x = 1,178,883,422.72/38,936.45
  6. Step 6: Final answer
    x = 30,277.11

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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.