Home / 18,908.75-28,367.21-5,760.77

Finding the Fourth Proportional to 18,908.75, 28,367.21 and 5,760.77

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Solution

The fourth proportional to 18,908.75, 28,367.21 and 5,760.77 is: 8,642.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908.75 : 28,367.21 = 5,760.77 : x
  2. Step 2: Convert to fraction form
    18,908.75/28,367.21 = 5,760.77/x
  3. Step 3: Cross multiply
    18,908.75x = 28,367.21 × 5,760.77
  4. Step 4: Simplify right side
    18,908.75x = 163,416,844.92
  5. Step 5: Solve for x
    x = 163,416,844.92/18,908.75
  6. Step 6: Final answer
    x = 8,642.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.