Home / 37,139.47-51,255.97-21,220.83

Finding the Fourth Proportional to 37,139.47, 51,255.97 and 21,220.83

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Solution

The fourth proportional to 37,139.47, 51,255.97 and 21,220.83 is: 29,286.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,139.47 : 51,255.97 = 21,220.83 : x
  2. Step 2: Convert to fraction form
    37,139.47/51,255.97 = 21,220.83/x
  3. Step 3: Cross multiply
    37,139.47x = 51,255.97 × 21,220.83
  4. Step 4: Simplify right side
    37,139.47x = 1,087,694,172.80
  5. Step 5: Solve for x
    x = 1,087,694,172.80/37,139.47
  6. Step 6: Final answer
    x = 29,286.75

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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.