Home / 20,958.93-31,431.72-6,916.34

Finding the Fourth Proportional to 20,958.93, 31,431.72 and 6,916.34

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Solution

The fourth proportional to 20,958.93, 31,431.72 and 6,916.34 is: 10,372.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.93 : 31,431.72 = 6,916.34 : x
  2. Step 2: Convert to fraction form
    20,958.93/31,431.72 = 6,916.34/x
  3. Step 3: Cross multiply
    20,958.93x = 31,431.72 × 6,916.34
  4. Step 4: Simplify right side
    20,958.93x = 217,392,462.30
  5. Step 5: Solve for x
    x = 217,392,462.30/20,958.93
  6. Step 6: Final answer
    x = 10,372.31

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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.