Home / 20,916.96-31,366.23-9,826.80

Finding the Fourth Proportional to 20,916.96, 31,366.23 and 9,826.80

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Solution

The fourth proportional to 20,916.96, 31,366.23 and 9,826.80 is: 14,735.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.96 : 31,366.23 = 9,826.80 : x
  2. Step 2: Convert to fraction form
    20,916.96/31,366.23 = 9,826.80/x
  3. Step 3: Cross multiply
    20,916.96x = 31,366.23 × 9,826.80
  4. Step 4: Simplify right side
    20,916.96x = 308,229,668.96
  5. Step 5: Solve for x
    x = 308,229,668.96/20,916.96
  6. Step 6: Final answer
    x = 14,735.87

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1.5x scale

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.