Home / 39,579.83-54,620.15-21,675.18

Finding the Fourth Proportional to 39,579.83, 54,620.15 and 21,675.18

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Solution

The fourth proportional to 39,579.83, 54,620.15 and 21,675.18 is: 29,911.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,579.83 : 54,620.15 = 21,675.18 : x
  2. Step 2: Convert to fraction form
    39,579.83/54,620.15 = 21,675.18/x
  3. Step 3: Cross multiply
    39,579.83x = 54,620.15 × 21,675.18
  4. Step 4: Simplify right side
    39,579.83x = 1,183,901,582.88
  5. Step 5: Solve for x
    x = 1,183,901,582.88/39,579.83
  6. Step 6: Final answer
    x = 29,911.74

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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.