Home / 15,380.57-21,224.59-8,667.56

Finding the Fourth Proportional to 15,380.57, 21,224.59 and 8,667.56

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Solution

The fourth proportional to 15,380.57, 21,224.59 and 8,667.56 is: 11,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,380.57 : 21,224.59 = 8,667.56 : x
  2. Step 2: Convert to fraction form
    15,380.57/21,224.59 = 8,667.56/x
  3. Step 3: Cross multiply
    15,380.57x = 21,224.59 × 8,667.56
  4. Step 4: Simplify right side
    15,380.57x = 183,965,438.69
  5. Step 5: Solve for x
    x = 183,965,438.69/15,380.57
  6. Step 6: Final answer
    x = 11,960.90

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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.