Home / 12,175.89-18,264.75-3,856.56

Finding the Fourth Proportional to 12,175.89, 18,264.75 and 3,856.56

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Solution

The fourth proportional to 12,175.89, 18,264.75 and 3,856.56 is: 5,785.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,175.89 : 18,264.75 = 3,856.56 : x
  2. Step 2: Convert to fraction form
    12,175.89/18,264.75 = 3,856.56/x
  3. Step 3: Cross multiply
    12,175.89x = 18,264.75 × 3,856.56
  4. Step 4: Simplify right side
    12,175.89x = 70,439,104.26
  5. Step 5: Solve for x
    x = 70,439,104.26/12,175.89
  6. Step 6: Final answer
    x = 5,785.13

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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.