Home / 20,927.84-28,879.34-11,494.60

Finding the Fourth Proportional to 20,927.84, 28,879.34 and 11,494.60

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Solution

The fourth proportional to 20,927.84, 28,879.34 and 11,494.60 is: 15,861.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.84 : 28,879.34 = 11,494.60 : x
  2. Step 2: Convert to fraction form
    20,927.84/28,879.34 = 11,494.60/x
  3. Step 3: Cross multiply
    20,927.84x = 28,879.34 × 11,494.60
  4. Step 4: Simplify right side
    20,927.84x = 331,956,461.56
  5. Step 5: Solve for x
    x = 331,956,461.56/20,927.84
  6. Step 6: Final answer
    x = 15,861.96

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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.