Home / 20,372.86-30,554.34-8,520.22

Finding the Fourth Proportional to 20,372.86, 30,554.34 and 8,520.22

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Solution

The fourth proportional to 20,372.86, 30,554.34 and 8,520.22 is: 12,778.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,372.86 : 30,554.34 = 8,520.22 : x
  2. Step 2: Convert to fraction form
    20,372.86/30,554.34 = 8,520.22/x
  3. Step 3: Cross multiply
    20,372.86x = 30,554.34 × 8,520.22
  4. Step 4: Simplify right side
    20,372.86x = 260,329,698.75
  5. Step 5: Solve for x
    x = 260,329,698.75/20,372.86
  6. Step 6: Final answer
    x = 12,778.26

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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.