Home / 37,139.80-51,257.46-21,220.60

Finding the Fourth Proportional to 37,139.80, 51,257.46 and 21,220.60

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Solution

The fourth proportional to 37,139.80, 51,257.46 and 21,220.60 is: 29,287.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,139.80 : 51,257.46 = 21,220.60 : x
  2. Step 2: Convert to fraction form
    37,139.80/51,257.46 = 21,220.60/x
  3. Step 3: Cross multiply
    37,139.80x = 51,257.46 × 21,220.60
  4. Step 4: Simplify right side
    37,139.80x = 1,087,714,055.68
  5. Step 5: Solve for x
    x = 1,087,714,055.68/37,139.80
  6. Step 6: Final answer
    x = 29,287.02

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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.