Home / 20,958.59-31,431.22-6,916.00

Finding the Fourth Proportional to 20,958.59, 31,431.22 and 6,916.00

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Solution

The fourth proportional to 20,958.59, 31,431.22 and 6,916.00 is: 10,371.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.59 : 31,431.22 = 6,916.00 : x
  2. Step 2: Convert to fraction form
    20,958.59/31,431.22 = 6,916.00/x
  3. Step 3: Cross multiply
    20,958.59x = 31,431.22 × 6,916.00
  4. Step 4: Simplify right side
    20,958.59x = 217,378,280.59
  5. Step 5: Solve for x
    x = 217,378,280.59/20,958.59
  6. Step 6: Final answer
    x = 10,371.80

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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.