Home / 14,912.72-20,579.49-8,106.80

Finding the Fourth Proportional to 14,912.72, 20,579.49 and 8,106.80

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Solution

The fourth proportional to 14,912.72, 20,579.49 and 8,106.80 is: 11,187.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,912.72 : 20,579.49 = 8,106.80 : x
  2. Step 2: Convert to fraction form
    14,912.72/20,579.49 = 8,106.80/x
  3. Step 3: Cross multiply
    14,912.72x = 20,579.49 × 8,106.80
  4. Step 4: Simplify right side
    14,912.72x = 166,833,706.63
  5. Step 5: Solve for x
    x = 166,833,706.63/14,912.72
  6. Step 6: Final answer
    x = 11,187.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.