Home / 12,961.34-19,465.43-11,919.42

Finding the Fourth Proportional to 12,961.34, 19,465.43 and 11,919.42

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Solution

The fourth proportional to 12,961.34, 19,465.43 and 11,919.42 is: 17,900.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.34 : 19,465.43 = 11,919.42 : x
  2. Step 2: Convert to fraction form
    12,961.34/19,465.43 = 11,919.42/x
  3. Step 3: Cross multiply
    12,961.34x = 19,465.43 × 11,919.42
  4. Step 4: Simplify right side
    12,961.34x = 232,016,635.65
  5. Step 5: Solve for x
    x = 232,016,635.65/12,961.34
  6. Step 6: Final answer
    x = 17,900.67

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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.