Home / 12,072.51-16,666.70-8,249.92

Finding the Fourth Proportional to 12,072.51, 16,666.70 and 8,249.92

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Solution

The fourth proportional to 12,072.51, 16,666.70 and 8,249.92 is: 11,389.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072.51 : 16,666.70 = 8,249.92 : x
  2. Step 2: Convert to fraction form
    12,072.51/16,666.70 = 8,249.92/x
  3. Step 3: Cross multiply
    12,072.51x = 16,666.70 × 8,249.92
  4. Step 4: Simplify right side
    12,072.51x = 137,498,858.75
  5. Step 5: Solve for x
    x = 137,498,858.75/12,072.51
  6. Step 6: Final answer
    x = 11,389.42

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Double scale
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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.