Home / 28,789.40-39,728.62-16,042.64

Finding the Fourth Proportional to 28,789.40, 39,728.62 and 16,042.64

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Solution

The fourth proportional to 28,789.40, 39,728.62 and 16,042.64 is: 22,138.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,789.40 : 39,728.62 = 16,042.64 : x
  2. Step 2: Convert to fraction form
    28,789.40/39,728.62 = 16,042.64/x
  3. Step 3: Cross multiply
    28,789.40x = 39,728.62 × 16,042.64
  4. Step 4: Simplify right side
    28,789.40x = 637,351,948.36
  5. Step 5: Solve for x
    x = 637,351,948.36/28,789.40
  6. Step 6: Final answer
    x = 22,138.42

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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.