Home / 20,572.48-30,835.32-12,786.64

Finding the Fourth Proportional to 20,572.48, 30,835.32 and 12,786.64

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Solution

The fourth proportional to 20,572.48, 30,835.32 and 12,786.64 is: 19,165.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.48 : 30,835.32 = 12,786.64 : x
  2. Step 2: Convert to fraction form
    20,572.48/30,835.32 = 12,786.64/x
  3. Step 3: Cross multiply
    20,572.48x = 30,835.32 × 12,786.64
  4. Step 4: Simplify right side
    20,572.48x = 394,280,136.12
  5. Step 5: Solve for x
    x = 394,280,136.12/20,572.48
  6. Step 6: Final answer
    x = 19,165.42

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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.