Home / 20,771.45-28,664.44-11,340.02

Finding the Fourth Proportional to 20,771.45, 28,664.44 and 11,340.02

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Solution

The fourth proportional to 20,771.45, 28,664.44 and 11,340.02 is: 15,649.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771.45 : 28,664.44 = 11,340.02 : x
  2. Step 2: Convert to fraction form
    20,771.45/28,664.44 = 11,340.02/x
  3. Step 3: Cross multiply
    20,771.45x = 28,664.44 × 11,340.02
  4. Step 4: Simplify right side
    20,771.45x = 325,055,151.22
  5. Step 5: Solve for x
    x = 325,055,151.22/20,771.45
  6. Step 6: Final answer
    x = 15,649.13

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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.