Home / 13,752.36-18,980.10-8,163.72

Finding the Fourth Proportional to 13,752.36, 18,980.10 and 8,163.72

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Solution

The fourth proportional to 13,752.36, 18,980.10 and 8,163.72 is: 11,267.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.36 : 18,980.10 = 8,163.72 : x
  2. Step 2: Convert to fraction form
    13,752.36/18,980.10 = 8,163.72/x
  3. Step 3: Cross multiply
    13,752.36x = 18,980.10 × 8,163.72
  4. Step 4: Simplify right side
    13,752.36x = 154,948,221.97
  5. Step 5: Solve for x
    x = 154,948,221.97/13,752.36
  6. Step 6: Final answer
    x = 11,267.03

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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.