Home / 28,648.86-42,975.36-11,992.11

Finding the Fourth Proportional to 28,648.86, 42,975.36 and 11,992.11

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Solution

The fourth proportional to 28,648.86, 42,975.36 and 11,992.11 is: 17,989.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,648.86 : 42,975.36 = 11,992.11 : x
  2. Step 2: Convert to fraction form
    28,648.86/42,975.36 = 11,992.11/x
  3. Step 3: Cross multiply
    28,648.86x = 42,975.36 × 11,992.11
  4. Step 4: Simplify right side
    28,648.86x = 515,365,244.41
  5. Step 5: Solve for x
    x = 515,365,244.41/28,648.86
  6. Step 6: Final answer
    x = 17,989.03

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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.