Home / 20,709.87-28,582.64-11,755.52

Finding the Fourth Proportional to 20,709.87, 28,582.64 and 11,755.52

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Solution

The fourth proportional to 20,709.87, 28,582.64 and 11,755.52 is: 16,224.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.87 : 28,582.64 = 11,755.52 : x
  2. Step 2: Convert to fraction form
    20,709.87/28,582.64 = 11,755.52/x
  3. Step 3: Cross multiply
    20,709.87x = 28,582.64 × 11,755.52
  4. Step 4: Simplify right side
    20,709.87x = 336,003,796.17
  5. Step 5: Solve for x
    x = 336,003,796.17/20,709.87
  6. Step 6: Final answer
    x = 16,224.33

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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.