Home / 39,579.74-54,620.04-21,675.83

Finding the Fourth Proportional to 39,579.74, 54,620.04 and 21,675.83

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Solution

The fourth proportional to 39,579.74, 54,620.04 and 21,675.83 is: 29,912.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,579.74 : 54,620.04 = 21,675.83 : x
  2. Step 2: Convert to fraction form
    39,579.74/54,620.04 = 21,675.83/x
  3. Step 3: Cross multiply
    39,579.74x = 54,620.04 × 21,675.83
  4. Step 4: Simplify right side
    39,579.74x = 1,183,934,701.63
  5. Step 5: Solve for x
    x = 1,183,934,701.63/39,579.74
  6. Step 6: Final answer
    x = 29,912.64

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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.