Home / 28,718.12-39,625.19-16,779.15

Finding the Fourth Proportional to 28,718.12, 39,625.19 and 16,779.15

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Solution

The fourth proportional to 28,718.12, 39,625.19 and 16,779.15 is: 23,151.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,718.12 : 39,625.19 = 16,779.15 : x
  2. Step 2: Convert to fraction form
    28,718.12/39,625.19 = 16,779.15/x
  3. Step 3: Cross multiply
    28,718.12x = 39,625.19 × 16,779.15
  4. Step 4: Simplify right side
    28,718.12x = 664,876,922.89
  5. Step 5: Solve for x
    x = 664,876,922.89/28,718.12
  6. Step 6: Final answer
    x = 23,151.83

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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.