Home / 37,087.60-55,636.80-12,128.80

Finding the Fourth Proportional to 37,087.60, 55,636.80 and 12,128.80

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Solution

The fourth proportional to 37,087.60, 55,636.80 and 12,128.80 is: 18,194.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,087.60 : 55,636.80 = 12,128.80 : x
  2. Step 2: Convert to fraction form
    37,087.60/55,636.80 = 12,128.80/x
  3. Step 3: Cross multiply
    37,087.60x = 55,636.80 × 12,128.80
  4. Step 4: Simplify right side
    37,087.60x = 674,807,619.84
  5. Step 5: Solve for x
    x = 674,807,619.84/37,087.60
  6. Step 6: Final answer
    x = 18,194.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.