Home / 28,452.80-39,263.52-15,879.36

Finding the Fourth Proportional to 28,452.80, 39,263.52 and 15,879.36

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Solution

The fourth proportional to 28,452.80, 39,263.52 and 15,879.36 is: 21,912.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,452.80 : 39,263.52 = 15,879.36 : x
  2. Step 2: Convert to fraction form
    28,452.80/39,263.52 = 15,879.36/x
  3. Step 3: Cross multiply
    28,452.80x = 39,263.52 × 15,879.36
  4. Step 4: Simplify right side
    28,452.80x = 623,479,568.95
  5. Step 5: Solve for x
    x = 623,479,568.95/28,452.80
  6. Step 6: Final answer
    x = 21,912.77

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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.