Home / 13,872.72-19,232.13-13,124.28

Finding the Fourth Proportional to 13,872.72, 19,232.13 and 13,124.28

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Solution

The fourth proportional to 13,872.72, 19,232.13 and 13,124.28 is: 18,194.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.72 : 19,232.13 = 13,124.28 : x
  2. Step 2: Convert to fraction form
    13,872.72/19,232.13 = 13,124.28/x
  3. Step 3: Cross multiply
    13,872.72x = 19,232.13 × 13,124.28
  4. Step 4: Simplify right side
    13,872.72x = 252,407,859.12
  5. Step 5: Solve for x
    x = 252,407,859.12/13,872.72
  6. Step 6: Final answer
    x = 18,194.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.