Home / 13,861.24-20,783.90-8,241.28

Finding the Fourth Proportional to 13,861.24, 20,783.90 and 8,241.28

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Solution

The fourth proportional to 13,861.24, 20,783.90 and 8,241.28 is: 12,357.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,861.24 : 20,783.90 = 8,241.28 : x
  2. Step 2: Convert to fraction form
    13,861.24/20,783.90 = 8,241.28/x
  3. Step 3: Cross multiply
    13,861.24x = 20,783.90 × 8,241.28
  4. Step 4: Simplify right side
    13,861.24x = 171,285,939.39
  5. Step 5: Solve for x
    x = 171,285,939.39/13,861.24
  6. Step 6: Final answer
    x = 12,357.19

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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.