Home / 28,648.90-42,968.38-7,867.54

Finding the Fourth Proportional to 28,648.90, 42,968.38 and 7,867.54

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Solution

The fourth proportional to 28,648.90, 42,968.38 and 7,867.54 is: 11,799.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,648.90 : 42,968.38 = 7,867.54 : x
  2. Step 2: Convert to fraction form
    28,648.90/42,968.38 = 7,867.54/x
  3. Step 3: Cross multiply
    28,648.90x = 42,968.38 × 7,867.54
  4. Step 4: Simplify right side
    28,648.90x = 338,055,448.39
  5. Step 5: Solve for x
    x = 338,055,448.39/28,648.90
  6. Step 6: Final answer
    x = 11,799.95

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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.