Home / 28,830.36-39,793.50-19,879.32

Finding the Fourth Proportional to 28,830.36, 39,793.50 and 19,879.32

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Solution

The fourth proportional to 28,830.36, 39,793.50 and 19,879.32 is: 27,438.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,830.36 : 39,793.50 = 19,879.32 : x
  2. Step 2: Convert to fraction form
    28,830.36/39,793.50 = 19,879.32/x
  3. Step 3: Cross multiply
    28,830.36x = 39,793.50 × 19,879.32
  4. Step 4: Simplify right side
    28,830.36x = 791,067,720.42
  5. Step 5: Solve for x
    x = 791,067,720.42/28,830.36
  6. Step 6: Final answer
    x = 27,438.70

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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.