Home / 20,916.37-31,372.26-6,125.43

Finding the Fourth Proportional to 20,916.37, 31,372.26 and 6,125.43

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Solution

The fourth proportional to 20,916.37, 31,372.26 and 6,125.43 is: 9,187.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.37 : 31,372.26 = 6,125.43 : x
  2. Step 2: Convert to fraction form
    20,916.37/31,372.26 = 6,125.43/x
  3. Step 3: Cross multiply
    20,916.37x = 31,372.26 × 6,125.43
  4. Step 4: Simplify right side
    20,916.37x = 192,168,582.57
  5. Step 5: Solve for x
    x = 192,168,582.57/20,916.37
  6. Step 6: Final answer
    x = 9,187.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.