Home / 20,836.86-28,745.73-12,448.50

Finding the Fourth Proportional to 20,836.86, 28,745.73 and 12,448.50

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Solution

The fourth proportional to 20,836.86, 28,745.73 and 12,448.50 is: 17,173.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.86 : 28,745.73 = 12,448.50 : x
  2. Step 2: Convert to fraction form
    20,836.86/28,745.73 = 12,448.50/x
  3. Step 3: Cross multiply
    20,836.86x = 28,745.73 × 12,448.50
  4. Step 4: Simplify right side
    20,836.86x = 357,841,219.91
  5. Step 5: Solve for x
    x = 357,841,219.91/20,836.86
  6. Step 6: Final answer
    x = 17,173.47

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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.