Home / 12,761.69-17,609.94-11,821.28

Finding the Fourth Proportional to 12,761.69, 17,609.94 and 11,821.28

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Solution

The fourth proportional to 12,761.69, 17,609.94 and 11,821.28 is: 16,312.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,761.69 : 17,609.94 = 11,821.28 : x
  2. Step 2: Convert to fraction form
    12,761.69/17,609.94 = 11,821.28/x
  3. Step 3: Cross multiply
    12,761.69x = 17,609.94 × 11,821.28
  4. Step 4: Simplify right side
    12,761.69x = 208,171,943.47
  5. Step 5: Solve for x
    x = 208,171,943.47/12,761.69
  6. Step 6: Final answer
    x = 16,312.26

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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.