Home / 38,936.91-53,732.29-21,942.89

Finding the Fourth Proportional to 38,936.91, 53,732.29 and 21,942.89

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Solution

The fourth proportional to 38,936.91, 53,732.29 and 21,942.89 is: 30,280.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,936.91 : 53,732.29 = 21,942.89 : x
  2. Step 2: Convert to fraction form
    38,936.91/53,732.29 = 21,942.89/x
  3. Step 3: Cross multiply
    38,936.91x = 53,732.29 × 21,942.89
  4. Step 4: Simplify right side
    38,936.91x = 1,179,041,728.92
  5. Step 5: Solve for x
    x = 1,179,041,728.92/38,936.91
  6. Step 6: Final answer
    x = 30,280.82

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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.