Home / 20,409.37-28,168.66-11,916.52

Finding the Fourth Proportional to 20,409.37, 28,168.66 and 11,916.52

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Solution

The fourth proportional to 20,409.37, 28,168.66 and 11,916.52 is: 16,446.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.37 : 28,168.66 = 11,916.52 : x
  2. Step 2: Convert to fraction form
    20,409.37/28,168.66 = 11,916.52/x
  3. Step 3: Cross multiply
    20,409.37x = 28,168.66 × 11,916.52
  4. Step 4: Simplify right side
    20,409.37x = 335,672,344.74
  5. Step 5: Solve for x
    x = 335,672,344.74/20,409.37
  6. Step 6: Final answer
    x = 16,446.97

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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.