Home / 13,634.22-18,814.12-7,664.78

Finding the Fourth Proportional to 13,634.22, 18,814.12 and 7,664.78

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Solution

The fourth proportional to 13,634.22, 18,814.12 and 7,664.78 is: 10,576.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.22 : 18,814.12 = 7,664.78 : x
  2. Step 2: Convert to fraction form
    13,634.22/18,814.12 = 7,664.78/x
  3. Step 3: Cross multiply
    13,634.22x = 18,814.12 × 7,664.78
  4. Step 4: Simplify right side
    13,634.22x = 144,206,055.85
  5. Step 5: Solve for x
    x = 144,206,055.85/13,634.22
  6. Step 6: Final answer
    x = 10,576.77

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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.