Home / 11,925.56-16,456.30-6,620.60

Finding the Fourth Proportional to 11,925.56, 16,456.30 and 6,620.60

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Solution

The fourth proportional to 11,925.56, 16,456.30 and 6,620.60 is: 9,135.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,925.56 : 16,456.30 = 6,620.60 : x
  2. Step 2: Convert to fraction form
    11,925.56/16,456.30 = 6,620.60/x
  3. Step 3: Cross multiply
    11,925.56x = 16,456.30 × 6,620.60
  4. Step 4: Simplify right side
    11,925.56x = 108,950,579.78
  5. Step 5: Solve for x
    x = 108,950,579.78/11,925.56
  6. Step 6: Final answer
    x = 9,135.89

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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.