Home / 12,128.15-16,736.78-6,823.01

Finding the Fourth Proportional to 12,128.15, 16,736.78 and 6,823.01

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Solution

The fourth proportional to 12,128.15, 16,736.78 and 6,823.01 is: 9,415.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.15 : 16,736.78 = 6,823.01 : x
  2. Step 2: Convert to fraction form
    12,128.15/16,736.78 = 6,823.01/x
  3. Step 3: Cross multiply
    12,128.15x = 16,736.78 × 6,823.01
  4. Step 4: Simplify right side
    12,128.15x = 114,195,099.51
  5. Step 5: Solve for x
    x = 114,195,099.51/12,128.15
  6. Step 6: Final answer
    x = 9,415.71

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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.