Home / 39,786.45-54,904.22-21,881.46

Finding the Fourth Proportional to 39,786.45, 54,904.22 and 21,881.46

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Solution

The fourth proportional to 39,786.45, 54,904.22 and 21,881.46 is: 30,195.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,786.45 : 54,904.22 = 21,881.46 : x
  2. Step 2: Convert to fraction form
    39,786.45/54,904.22 = 21,881.46/x
  3. Step 3: Cross multiply
    39,786.45x = 54,904.22 × 21,881.46
  4. Step 4: Simplify right side
    39,786.45x = 1,201,384,384.35
  5. Step 5: Solve for x
    x = 1,201,384,384.35/39,786.45
  6. Step 6: Final answer
    x = 30,195.82

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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.