Home / 11,696.09-16,140.51-6,390.81

Finding the Fourth Proportional to 11,696.09, 16,140.51 and 6,390.81

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Solution

The fourth proportional to 11,696.09, 16,140.51 and 6,390.81 is: 8,819.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,696.09 : 16,140.51 = 6,390.81 : x
  2. Step 2: Convert to fraction form
    11,696.09/16,140.51 = 6,390.81/x
  3. Step 3: Cross multiply
    11,696.09x = 16,140.51 × 6,390.81
  4. Step 4: Simplify right side
    11,696.09x = 103,150,932.71
  5. Step 5: Solve for x
    x = 103,150,932.71/11,696.09
  6. Step 6: Final answer
    x = 8,819.27

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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.