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Finding the Fourth Proportional to 12,370.69, 17,072.09 and 7,065.91

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Solution

The fourth proportional to 12,370.69, 17,072.09 and 7,065.91 is: 9,751.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,370.69 : 17,072.09 = 7,065.91 : x
  2. Step 2: Convert to fraction form
    12,370.69/17,072.09 = 7,065.91/x
  3. Step 3: Cross multiply
    12,370.69x = 17,072.09 × 7,065.91
  4. Step 4: Simplify right side
    12,370.69x = 120,629,851.45
  5. Step 5: Solve for x
    x = 120,629,851.45/12,370.69
  6. Step 6: Final answer
    x = 9,751.26

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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.