Home / 39,579.84-54,618.54-21,674.54

Finding the Fourth Proportional to 39,579.84, 54,618.54 and 21,674.54

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Solution

The fourth proportional to 39,579.84, 54,618.54 and 21,674.54 is: 29,909.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,579.84 : 54,618.54 = 21,674.54 : x
  2. Step 2: Convert to fraction form
    39,579.84/54,618.54 = 21,674.54/x
  3. Step 3: Cross multiply
    39,579.84x = 54,618.54 × 21,674.54
  4. Step 4: Simplify right side
    39,579.84x = 1,183,831,729.97
  5. Step 5: Solve for x
    x = 1,183,831,729.97/39,579.84
  6. Step 6: Final answer
    x = 29,909.97

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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.