Home / 13,321.16-18,389.84-8,286.98

Finding the Fourth Proportional to 13,321.16, 18,389.84 and 8,286.98

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Solution

The fourth proportional to 13,321.16, 18,389.84 and 8,286.98 is: 11,440.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.16 : 18,389.84 = 8,286.98 : x
  2. Step 2: Convert to fraction form
    13,321.16/18,389.84 = 8,286.98/x
  3. Step 3: Cross multiply
    13,321.16x = 18,389.84 × 8,286.98
  4. Step 4: Simplify right side
    13,321.16x = 152,396,102.90
  5. Step 5: Solve for x
    x = 152,396,102.90/13,321.16
  6. Step 6: Final answer
    x = 11,440.15

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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.