Home / 12,187.97-16,823.50-8,661.43

Finding the Fourth Proportional to 12,187.97, 16,823.50 and 8,661.43

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Solution

The fourth proportional to 12,187.97, 16,823.50 and 8,661.43 is: 11,955.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.97 : 16,823.50 = 8,661.43 : x
  2. Step 2: Convert to fraction form
    12,187.97/16,823.50 = 8,661.43/x
  3. Step 3: Cross multiply
    12,187.97x = 16,823.50 × 8,661.43
  4. Step 4: Simplify right side
    12,187.97x = 145,715,566.98
  5. Step 5: Solve for x
    x = 145,715,566.98/12,187.97
  6. Step 6: Final answer
    x = 11,955.69

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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.