Home / 13,427.15-18,526.48-8,121.85

Finding the Fourth Proportional to 13,427.15, 18,526.48 and 8,121.85

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Solution

The fourth proportional to 13,427.15, 18,526.48 and 8,121.85 is: 11,206.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.15 : 18,526.48 = 8,121.85 : x
  2. Step 2: Convert to fraction form
    13,427.15/18,526.48 = 8,121.85/x
  3. Step 3: Cross multiply
    13,427.15x = 18,526.48 × 8,121.85
  4. Step 4: Simplify right side
    13,427.15x = 150,469,250.98
  5. Step 5: Solve for x
    x = 150,469,250.98/13,427.15
  6. Step 6: Final answer
    x = 11,206.35

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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.