Home / 39,455.22-54,449.20-21,550.02

Finding the Fourth Proportional to 39,455.22, 54,449.20 and 21,550.02

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Solution

The fourth proportional to 39,455.22, 54,449.20 and 21,550.02 is: 29,739.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,455.22 : 54,449.20 = 21,550.02 : x
  2. Step 2: Convert to fraction form
    39,455.22/54,449.20 = 21,550.02/x
  3. Step 3: Cross multiply
    39,455.22x = 54,449.20 × 21,550.02
  4. Step 4: Simplify right side
    39,455.22x = 1,173,381,348.98
  5. Step 5: Solve for x
    x = 1,173,381,348.98/39,455.22
  6. Step 6: Final answer
    x = 29,739.57

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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.