Home / 11,305.50-16,958.45-4,288.78

Finding the Fourth Proportional to 11,305.50, 16,958.45 and 4,288.78

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Solution

The fourth proportional to 11,305.50, 16,958.45 and 4,288.78 is: 6,433.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,305.50 : 16,958.45 = 4,288.78 : x
  2. Step 2: Convert to fraction form
    11,305.50/16,958.45 = 4,288.78/x
  3. Step 3: Cross multiply
    11,305.50x = 16,958.45 × 4,288.78
  4. Step 4: Simplify right side
    11,305.50x = 72,731,061.19
  5. Step 5: Solve for x
    x = 72,731,061.19/11,305.50
  6. Step 6: Final answer
    x = 6,433.25

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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.