Home / 39,149.75-54,026.71-21,245.06

Finding the Fourth Proportional to 39,149.75, 54,026.71 and 21,245.06

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Solution

The fourth proportional to 39,149.75, 54,026.71 and 21,245.06 is: 29,318.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,149.75 : 54,026.71 = 21,245.06 : x
  2. Step 2: Convert to fraction form
    39,149.75/54,026.71 = 21,245.06/x
  3. Step 3: Cross multiply
    39,149.75x = 54,026.71 × 21,245.06
  4. Step 4: Simplify right side
    39,149.75x = 1,147,800,777.51
  5. Step 5: Solve for x
    x = 1,147,800,777.51/39,149.75
  6. Step 6: Final answer
    x = 29,318.21

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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.