Home / 12,187.97-16,807.10-9,942.65

Finding the Fourth Proportional to 12,187.97, 16,807.10 and 9,942.65

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Solution

The fourth proportional to 12,187.97, 16,807.10 and 9,942.65 is: 13,710.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.97 : 16,807.10 = 9,942.65 : x
  2. Step 2: Convert to fraction form
    12,187.97/16,807.10 = 9,942.65/x
  3. Step 3: Cross multiply
    12,187.97x = 16,807.10 × 9,942.65
  4. Step 4: Simplify right side
    12,187.97x = 167,107,042.09
  5. Step 5: Solve for x
    x = 167,107,042.09/12,187.97
  6. Step 6: Final answer
    x = 13,710.82

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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.