Home / 18,120.20-25,005.36-10,161.92

Finding the Fourth Proportional to 18,120.20, 25,005.36 and 10,161.92

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Solution

The fourth proportional to 18,120.20, 25,005.36 and 10,161.92 is: 14,023.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.20 : 25,005.36 = 10,161.92 : x
  2. Step 2: Convert to fraction form
    18,120.20/25,005.36 = 10,161.92/x
  3. Step 3: Cross multiply
    18,120.20x = 25,005.36 × 10,161.92
  4. Step 4: Simplify right side
    18,120.20x = 254,102,467.89
  5. Step 5: Solve for x
    x = 254,102,467.89/18,120.20
  6. Step 6: Final answer
    x = 14,023.16

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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.