Home / 12,544.23-18,820.64-7,858.65

Finding the Fourth Proportional to 12,544.23, 18,820.64 and 7,858.65

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Solution

The fourth proportional to 12,544.23, 18,820.64 and 7,858.65 is: 11,790.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,544.23 : 18,820.64 = 7,858.65 : x
  2. Step 2: Convert to fraction form
    12,544.23/18,820.64 = 7,858.65/x
  3. Step 3: Cross multiply
    12,544.23x = 18,820.64 × 7,858.65
  4. Step 4: Simplify right side
    12,544.23x = 147,904,868.56
  5. Step 5: Solve for x
    x = 147,904,868.56/12,544.23
  6. Step 6: Final answer
    x = 11,790.67

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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.