Home / 39,172.05-54,057.33-21,266.91

Finding the Fourth Proportional to 39,172.05, 54,057.33 and 21,266.91

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Solution

The fourth proportional to 39,172.05, 54,057.33 and 21,266.91 is: 29,348.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,172.05 : 54,057.33 = 21,266.91 : x
  2. Step 2: Convert to fraction form
    39,172.05/54,057.33 = 21,266.91/x
  3. Step 3: Cross multiply
    39,172.05x = 54,057.33 × 21,266.91
  4. Step 4: Simplify right side
    39,172.05x = 1,149,632,371.95
  5. Step 5: Solve for x
    x = 1,149,632,371.95/39,172.05
  6. Step 6: Final answer
    x = 29,348.28

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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.