Home / 13,362.87-18,438.27-8,583.67

Finding the Fourth Proportional to 13,362.87, 18,438.27 and 8,583.67

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Solution

The fourth proportional to 13,362.87, 18,438.27 and 8,583.67 is: 11,843.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,362.87 : 18,438.27 = 8,583.67 : x
  2. Step 2: Convert to fraction form
    13,362.87/18,438.27 = 8,583.67/x
  3. Step 3: Cross multiply
    13,362.87x = 18,438.27 × 8,583.67
  4. Step 4: Simplify right side
    13,362.87x = 158,267,932.86
  5. Step 5: Solve for x
    x = 158,267,932.86/13,362.87
  6. Step 6: Final answer
    x = 11,843.86

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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.