Home / 28,912.69-39,906.19-18,823.58

Finding the Fourth Proportional to 28,912.69, 39,906.19 and 18,823.58

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Solution

The fourth proportional to 28,912.69, 39,906.19 and 18,823.58 is: 25,980.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.69 : 39,906.19 = 18,823.58 : x
  2. Step 2: Convert to fraction form
    28,912.69/39,906.19 = 18,823.58/x
  3. Step 3: Cross multiply
    28,912.69x = 39,906.19 × 18,823.58
  4. Step 4: Simplify right side
    28,912.69x = 751,177,359.96
  5. Step 5: Solve for x
    x = 751,177,359.96/28,912.69
  6. Step 6: Final answer
    x = 25,980.89

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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.