Home / 13,143.44-18,135.24-7,553.36

Finding the Fourth Proportional to 13,143.44, 18,135.24 and 7,553.36

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Solution

The fourth proportional to 13,143.44, 18,135.24 and 7,553.36 is: 10,422.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.44 : 18,135.24 = 7,553.36 : x
  2. Step 2: Convert to fraction form
    13,143.44/18,135.24 = 7,553.36/x
  3. Step 3: Cross multiply
    13,143.44x = 18,135.24 × 7,553.36
  4. Step 4: Simplify right side
    13,143.44x = 136,981,996.41
  5. Step 5: Solve for x
    x = 136,981,996.41/13,143.44
  6. Step 6: Final answer
    x = 10,422.08

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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.