Home / 12,072.11-16,661.61-6,966.72

Finding the Fourth Proportional to 12,072.11, 16,661.61 and 6,966.72

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Solution

The fourth proportional to 12,072.11, 16,661.61 and 6,966.72 is: 9,615.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,072.11 : 16,661.61 = 6,966.72 : x
  2. Step 2: Convert to fraction form
    12,072.11/16,661.61 = 6,966.72/x
  3. Step 3: Cross multiply
    12,072.11x = 16,661.61 × 6,966.72
  4. Step 4: Simplify right side
    12,072.11x = 116,076,771.62
  5. Step 5: Solve for x
    x = 116,076,771.62/12,072.11
  6. Step 6: Final answer
    x = 9,615.29

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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.