Home / 39,811.59-54,940.64-21,908.43

Finding the Fourth Proportional to 39,811.59, 54,940.64 and 21,908.43

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Solution

The fourth proportional to 39,811.59, 54,940.64 and 21,908.43 is: 30,233.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,811.59 : 54,940.64 = 21,908.43 : x
  2. Step 2: Convert to fraction form
    39,811.59/54,940.64 = 21,908.43/x
  3. Step 3: Cross multiply
    39,811.59x = 54,940.64 × 21,908.43
  4. Step 4: Simplify right side
    39,811.59x = 1,203,663,056.05
  5. Step 5: Solve for x
    x = 1,203,663,056.05/39,811.59
  6. Step 6: Final answer
    x = 30,233.99

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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.