Home / 20,257.60-30,339.42-19,556.77

Finding the Fourth Proportional to 20,257.60, 30,339.42 and 19,556.77

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Solution

The fourth proportional to 20,257.60, 30,339.42 and 19,556.77 is: 29,289.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,257.60 : 30,339.42 = 19,556.77 : x
  2. Step 2: Convert to fraction form
    20,257.60/30,339.42 = 19,556.77/x
  3. Step 3: Cross multiply
    20,257.60x = 30,339.42 × 19,556.77
  4. Step 4: Simplify right side
    20,257.60x = 593,341,058.87
  5. Step 5: Solve for x
    x = 593,341,058.87/20,257.60
  6. Step 6: Final answer
    x = 29,289.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.