Home / 39,770.19-54,882.77-21,866.22

Finding the Fourth Proportional to 39,770.19, 54,882.77 and 21,866.22

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Solution

The fourth proportional to 39,770.19, 54,882.77 and 21,866.22 is: 30,175.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,770.19 : 54,882.77 = 21,866.22 : x
  2. Step 2: Convert to fraction form
    39,770.19/54,882.77 = 21,866.22/x
  3. Step 3: Cross multiply
    39,770.19x = 54,882.77 × 21,866.22
  4. Step 4: Simplify right side
    39,770.19x = 1,200,078,613.70
  5. Step 5: Solve for x
    x = 1,200,078,613.70/39,770.19
  6. Step 6: Final answer
    x = 30,175.33

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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.