Home / 20,356.48-28,093.66-11,403.86

Finding the Fourth Proportional to 20,356.48, 28,093.66 and 11,403.86

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Solution

The fourth proportional to 20,356.48, 28,093.66 and 11,403.86 is: 15,738.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,356.48 : 28,093.66 = 11,403.86 : x
  2. Step 2: Convert to fraction form
    20,356.48/28,093.66 = 11,403.86/x
  3. Step 3: Cross multiply
    20,356.48x = 28,093.66 × 11,403.86
  4. Step 4: Simplify right side
    20,356.48x = 320,376,053.57
  5. Step 5: Solve for x
    x = 320,376,053.57/20,356.48
  6. Step 6: Final answer
    x = 15,738.29

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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.