Home / 19,940.88-27,528.86-13,242.29

Finding the Fourth Proportional to 19,940.88, 27,528.86 and 13,242.29

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Solution

The fourth proportional to 19,940.88, 27,528.86 and 13,242.29 is: 18,281.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,940.88 : 27,528.86 = 13,242.29 : x
  2. Step 2: Convert to fraction form
    19,940.88/27,528.86 = 13,242.29/x
  3. Step 3: Cross multiply
    19,940.88x = 27,528.86 × 13,242.29
  4. Step 4: Simplify right side
    19,940.88x = 364,545,042.95
  5. Step 5: Solve for x
    x = 364,545,042.95/19,940.88
  6. Step 6: Final answer
    x = 18,281.29

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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.