Home / 19,886.97-29,828.89-11,561.68

Finding the Fourth Proportional to 19,886.97, 29,828.89 and 11,561.68

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Solution

The fourth proportional to 19,886.97, 29,828.89 and 11,561.68 is: 17,341.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,886.97 : 29,828.89 = 11,561.68 : x
  2. Step 2: Convert to fraction form
    19,886.97/29,828.89 = 11,561.68/x
  3. Step 3: Cross multiply
    19,886.97x = 29,828.89 × 11,561.68
  4. Step 4: Simplify right side
    19,886.97x = 344,872,080.94
  5. Step 5: Solve for x
    x = 344,872,080.94/19,886.97
  6. Step 6: Final answer
    x = 17,341.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.