Home / 28,745.67-39,669.30-15,999.39

Finding the Fourth Proportional to 28,745.67, 39,669.30 and 15,999.39

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Solution

The fourth proportional to 28,745.67, 39,669.30 and 15,999.39 is: 22,079.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,745.67 : 39,669.30 = 15,999.39 : x
  2. Step 2: Convert to fraction form
    28,745.67/39,669.30 = 15,999.39/x
  3. Step 3: Cross multiply
    28,745.67x = 39,669.30 × 15,999.39
  4. Step 4: Simplify right side
    28,745.67x = 634,684,601.73
  5. Step 5: Solve for x
    x = 634,684,601.73/28,745.67
  6. Step 6: Final answer
    x = 22,079.31

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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.