Home / 11,705.12-16,153.08-6,399.96

Finding the Fourth Proportional to 11,705.12, 16,153.08 and 6,399.96

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Solution

The fourth proportional to 11,705.12, 16,153.08 and 6,399.96 is: 8,831.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,705.12 : 16,153.08 = 6,399.96 : x
  2. Step 2: Convert to fraction form
    11,705.12/16,153.08 = 6,399.96/x
  3. Step 3: Cross multiply
    11,705.12x = 16,153.08 × 6,399.96
  4. Step 4: Simplify right side
    11,705.12x = 103,379,065.88
  5. Step 5: Solve for x
    x = 103,379,065.88/11,705.12
  6. Step 6: Final answer
    x = 8,831.95

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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.