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Finding the Fourth Proportional to 16,916.80, 25,391.40 and 8,606.20

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Solution

The fourth proportional to 16,916.80, 25,391.40 and 8,606.20 is: 12,917.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,916.80 : 25,391.40 = 8,606.20 : x
  2. Step 2: Convert to fraction form
    16,916.80/25,391.40 = 8,606.20/x
  3. Step 3: Cross multiply
    16,916.80x = 25,391.40 × 8,606.20
  4. Step 4: Simplify right side
    16,916.80x = 218,523,466.68
  5. Step 5: Solve for x
    x = 218,523,466.68/16,916.80
  6. Step 6: Final answer
    x = 12,917.54

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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.