Home / 15,380.38-21,224.97-8,667.67

Finding the Fourth Proportional to 15,380.38, 21,224.97 and 8,667.67

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Solution

The fourth proportional to 15,380.38, 21,224.97 and 8,667.67 is: 11,961.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,380.38 : 21,224.97 = 8,667.67 : x
  2. Step 2: Convert to fraction form
    15,380.38/21,224.97 = 8,667.67/x
  3. Step 3: Cross multiply
    15,380.38x = 21,224.97 × 8,667.67
  4. Step 4: Simplify right side
    15,380.38x = 183,971,035.72
  5. Step 5: Solve for x
    x = 183,971,035.72/15,380.38
  6. Step 6: Final answer
    x = 11,961.41

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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.