Home / 20,914.51-28,861.66-11,483

Finding the Fourth Proportional to 20,914.51, 28,861.66 and 11,483

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Solution

The fourth proportional to 20,914.51, 28,861.66 and 11,483 is: 15,846.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.51 : 28,861.66 = 11,483 : x
  2. Step 2: Convert to fraction form
    20,914.51/28,861.66 = 11,483/x
  3. Step 3: Cross multiply
    20,914.51x = 28,861.66 × 11,483
  4. Step 4: Simplify right side
    20,914.51x = 331,418,441.78
  5. Step 5: Solve for x
    x = 331,418,441.78/20,914.51
  6. Step 6: Final answer
    x = 15,846.34

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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.