Home / 13,728.12-18,945.36-8,063.04

Finding the Fourth Proportional to 13,728.12, 18,945.36 and 8,063.04

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Solution

The fourth proportional to 13,728.12, 18,945.36 and 8,063.04 is: 11,127.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.12 : 18,945.36 = 8,063.04 : x
  2. Step 2: Convert to fraction form
    13,728.12/18,945.36 = 8,063.04/x
  3. Step 3: Cross multiply
    13,728.12x = 18,945.36 × 8,063.04
  4. Step 4: Simplify right side
    13,728.12x = 152,757,195.49
  5. Step 5: Solve for x
    x = 152,757,195.49/13,728.12
  6. Step 6: Final answer
    x = 11,127.32

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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.