Home / 18,119.36-25,004.40-10,161.56

Finding the Fourth Proportional to 18,119.36, 25,004.40 and 10,161.56

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Solution

The fourth proportional to 18,119.36, 25,004.40 and 10,161.56 is: 14,022.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,119.36 : 25,004.40 = 10,161.56 : x
  2. Step 2: Convert to fraction form
    18,119.36/25,004.40 = 10,161.56/x
  3. Step 3: Cross multiply
    18,119.36x = 25,004.40 × 10,161.56
  4. Step 4: Simplify right side
    18,119.36x = 254,083,710.86
  5. Step 5: Solve for x
    x = 254,083,710.86/18,119.36
  6. Step 6: Final answer
    x = 14,022.78

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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.