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Finding the Fourth Proportional to 16,916.85, 25,360.70 and 8,139.69

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Solution

The fourth proportional to 16,916.85, 25,360.70 and 8,139.69 is: 12,202.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,916.85 : 25,360.70 = 8,139.69 : x
  2. Step 2: Convert to fraction form
    16,916.85/25,360.70 = 8,139.69/x
  3. Step 3: Cross multiply
    16,916.85x = 25,360.70 × 8,139.69
  4. Step 4: Simplify right side
    16,916.85x = 206,428,195.48
  5. Step 5: Solve for x
    x = 206,428,195.48/16,916.85
  6. Step 6: Final answer
    x = 12,202.52

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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.