Home / 39,579.31-54,619.27-21,674.26

Finding the Fourth Proportional to 39,579.31, 54,619.27 and 21,674.26

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Solution

The fourth proportional to 39,579.31, 54,619.27 and 21,674.26 is: 29,910.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,579.31 : 54,619.27 = 21,674.26 : x
  2. Step 2: Convert to fraction form
    39,579.31/54,619.27 = 21,674.26/x
  3. Step 3: Cross multiply
    39,579.31x = 54,619.27 × 21,674.26
  4. Step 4: Simplify right side
    39,579.31x = 1,183,832,258.99
  5. Step 5: Solve for x
    x = 1,183,832,258.99/39,579.31
  6. Step 6: Final answer
    x = 29,910.38

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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.