Home / 20,580.37-28,400.70-11,627.86

Finding the Fourth Proportional to 20,580.37, 28,400.70 and 11,627.86

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Solution

The fourth proportional to 20,580.37, 28,400.70 and 11,627.86 is: 16,046.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.37 : 28,400.70 = 11,627.86 : x
  2. Step 2: Convert to fraction form
    20,580.37/28,400.70 = 11,627.86/x
  3. Step 3: Cross multiply
    20,580.37x = 28,400.70 × 11,627.86
  4. Step 4: Simplify right side
    20,580.37x = 330,239,363.50
  5. Step 5: Solve for x
    x = 330,239,363.50/20,580.37
  6. Step 6: Final answer
    x = 16,046.33

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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.