Home / 13,313.96-18,385.08-8,286.80

Finding the Fourth Proportional to 13,313.96, 18,385.08 and 8,286.80

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Solution

The fourth proportional to 13,313.96, 18,385.08 and 8,286.80 is: 11,443.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.96 : 18,385.08 = 8,286.80 : x
  2. Step 2: Convert to fraction form
    13,313.96/18,385.08 = 8,286.80/x
  3. Step 3: Cross multiply
    13,313.96x = 18,385.08 × 8,286.80
  4. Step 4: Simplify right side
    13,313.96x = 152,353,480.94
  5. Step 5: Solve for x
    x = 152,353,480.94/13,313.96
  6. Step 6: Final answer
    x = 11,443.14

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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.