Home / 39,881.75-55,036.58-21,732.44

Finding the Fourth Proportional to 39,881.75, 55,036.58 and 21,732.44

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Solution

The fourth proportional to 39,881.75, 55,036.58 and 21,732.44 is: 29,990.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,881.75 : 55,036.58 = 21,732.44 : x
  2. Step 2: Convert to fraction form
    39,881.75/55,036.58 = 21,732.44/x
  3. Step 3: Cross multiply
    39,881.75x = 55,036.58 × 21,732.44
  4. Step 4: Simplify right side
    39,881.75x = 1,196,079,145.49
  5. Step 5: Solve for x
    x = 1,196,079,145.49/39,881.75
  6. Step 6: Final answer
    x = 29,990.64

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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.