Home / 12,128.09-16,736.69-6,822.81

Finding the Fourth Proportional to 12,128.09, 16,736.69 and 6,822.81

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Solution

The fourth proportional to 12,128.09, 16,736.69 and 6,822.81 is: 9,415.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.09 : 16,736.69 = 6,822.81 : x
  2. Step 2: Convert to fraction form
    12,128.09/16,736.69 = 6,822.81/x
  3. Step 3: Cross multiply
    12,128.09x = 16,736.69 × 6,822.81
  4. Step 4: Simplify right side
    12,128.09x = 114,191,272.96
  5. Step 5: Solve for x
    x = 114,191,272.96/12,128.09
  6. Step 6: Final answer
    x = 9,415.44

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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.