Home / 12,675.38-19,013.07-12,383.78

Finding the Fourth Proportional to 12,675.38, 19,013.07 and 12,383.78

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Solution

The fourth proportional to 12,675.38, 19,013.07 and 12,383.78 is: 18,575.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,675.38 : 19,013.07 = 12,383.78 : x
  2. Step 2: Convert to fraction form
    12,675.38/19,013.07 = 12,383.78/x
  3. Step 3: Cross multiply
    12,675.38x = 19,013.07 × 12,383.78
  4. Step 4: Simplify right side
    12,675.38x = 235,453,676.00
  5. Step 5: Solve for x
    x = 235,453,676.00/12,675.38
  6. Step 6: Final answer
    x = 18,575.67

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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.