Home / 11,705.09-16,152.93-6,399.81

Finding the Fourth Proportional to 11,705.09, 16,152.93 and 6,399.81

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Solution

The fourth proportional to 11,705.09, 16,152.93 and 6,399.81 is: 8,831.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,705.09 : 16,152.93 = 6,399.81 : x
  2. Step 2: Convert to fraction form
    11,705.09/16,152.93 = 6,399.81/x
  3. Step 3: Cross multiply
    11,705.09x = 16,152.93 × 6,399.81
  4. Step 4: Simplify right side
    11,705.09x = 103,375,682.94
  5. Step 5: Solve for x
    x = 103,375,682.94/11,705.09
  6. Step 6: Final answer
    x = 8,831.69

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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.