Home / 39,899.60-55,059.24-21,994.58

Finding the Fourth Proportional to 39,899.60, 55,059.24 and 21,994.58

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Solution

The fourth proportional to 39,899.60, 55,059.24 and 21,994.58 is: 30,351.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,899.60 : 55,059.24 = 21,994.58 : x
  2. Step 2: Convert to fraction form
    39,899.60/55,059.24 = 21,994.58/x
  3. Step 3: Cross multiply
    39,899.60x = 55,059.24 × 21,994.58
  4. Step 4: Simplify right side
    39,899.60x = 1,211,004,858.92
  5. Step 5: Solve for x
    x = 1,211,004,858.92/39,899.60
  6. Step 6: Final answer
    x = 30,351.30

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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.