Home / 20,582.08-28,403.22-11,150.80

Finding the Fourth Proportional to 20,582.08, 28,403.22 and 11,150.80

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Solution

The fourth proportional to 20,582.08, 28,403.22 and 11,150.80 is: 15,388.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.08 : 28,403.22 = 11,150.80 : x
  2. Step 2: Convert to fraction form
    20,582.08/28,403.22 = 11,150.80/x
  3. Step 3: Cross multiply
    20,582.08x = 28,403.22 × 11,150.80
  4. Step 4: Simplify right side
    20,582.08x = 316,718,625.58
  5. Step 5: Solve for x
    x = 316,718,625.58/20,582.08
  6. Step 6: Final answer
    x = 15,388.08

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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.