Home / 11,108.30-16,662.45-8,629.70

Finding the Fourth Proportional to 11,108.30, 16,662.45 and 8,629.70

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Solution

The fourth proportional to 11,108.30, 16,662.45 and 8,629.70 is: 12,944.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,108.30 : 16,662.45 = 8,629.70 : x
  2. Step 2: Convert to fraction form
    11,108.30/16,662.45 = 8,629.70/x
  3. Step 3: Cross multiply
    11,108.30x = 16,662.45 × 8,629.70
  4. Step 4: Simplify right side
    11,108.30x = 143,791,944.77
  5. Step 5: Solve for x
    x = 143,791,944.77/11,108.30
  6. Step 6: Final answer
    x = 12,944.55

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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.