Home / 39,770.96-54,884.30-21,866.09

Finding the Fourth Proportional to 39,770.96, 54,884.30 and 21,866.09

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Solution

The fourth proportional to 39,770.96, 54,884.30 and 21,866.09 is: 30,175.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,770.96 : 54,884.30 = 21,866.09 : x
  2. Step 2: Convert to fraction form
    39,770.96/54,884.30 = 21,866.09/x
  3. Step 3: Cross multiply
    39,770.96x = 54,884.30 × 21,866.09
  4. Step 4: Simplify right side
    39,770.96x = 1,200,105,043.39
  5. Step 5: Solve for x
    x = 1,200,105,043.39/39,770.96
  6. Step 6: Final answer
    x = 30,175.41

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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.