Home / 13,145.43-18,133.94-8,667.54

Finding the Fourth Proportional to 13,145.43, 18,133.94 and 8,667.54

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Solution

The fourth proportional to 13,145.43, 18,133.94 and 8,667.54 is: 11,956.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.43 : 18,133.94 = 8,667.54 : x
  2. Step 2: Convert to fraction form
    13,145.43/18,133.94 = 8,667.54/x
  3. Step 3: Cross multiply
    13,145.43x = 18,133.94 × 8,667.54
  4. Step 4: Simplify right side
    13,145.43x = 157,176,674.97
  5. Step 5: Solve for x
    x = 157,176,674.97/13,145.43
  6. Step 6: Final answer
    x = 11,956.76

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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.