Home / 20,582.64-28,403.28-11,629.80

Finding the Fourth Proportional to 20,582.64, 28,403.28 and 11,629.80

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Solution

The fourth proportional to 20,582.64, 28,403.28 and 11,629.80 is: 16,048.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.64 : 28,403.28 = 11,629.80 : x
  2. Step 2: Convert to fraction form
    20,582.64/28,403.28 = 11,629.80/x
  3. Step 3: Cross multiply
    20,582.64x = 28,403.28 × 11,629.80
  4. Step 4: Simplify right side
    20,582.64x = 330,324,465.74
  5. Step 5: Solve for x
    x = 330,324,465.74/20,582.64
  6. Step 6: Final answer
    x = 16,048.69

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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.