Home / 39,172.05-54,057.47-21,267.05

Finding the Fourth Proportional to 39,172.05, 54,057.47 and 21,267.05

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Solution

The fourth proportional to 39,172.05, 54,057.47 and 21,267.05 is: 29,348.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,172.05 : 54,057.47 = 21,267.05 : x
  2. Step 2: Convert to fraction form
    39,172.05/54,057.47 = 21,267.05/x
  3. Step 3: Cross multiply
    39,172.05x = 54,057.47 × 21,267.05
  4. Step 4: Simplify right side
    39,172.05x = 1,149,642,540.74
  5. Step 5: Solve for x
    x = 1,149,642,540.74/39,172.05
  6. Step 6: Final answer
    x = 29,348.54

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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.