Home / 20,583.20-28,406.48-11,632.56

Finding the Fourth Proportional to 20,583.20, 28,406.48 and 11,632.56

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Solution

The fourth proportional to 20,583.20, 28,406.48 and 11,632.56 is: 16,053.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.20 : 28,406.48 = 11,632.56 : x
  2. Step 2: Convert to fraction form
    20,583.20/28,406.48 = 11,632.56/x
  3. Step 3: Cross multiply
    20,583.20x = 28,406.48 × 11,632.56
  4. Step 4: Simplify right side
    20,583.20x = 330,439,940.96
  5. Step 5: Solve for x
    x = 330,439,940.96/20,583.20
  6. Step 6: Final answer
    x = 16,053.87

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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.