Home / 18,936.63-26,132.61-11,387.31

Finding the Fourth Proportional to 18,936.63, 26,132.61 and 11,387.31

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Solution

The fourth proportional to 18,936.63, 26,132.61 and 11,387.31 is: 15,714.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.63 : 26,132.61 = 11,387.31 : x
  2. Step 2: Convert to fraction form
    18,936.63/26,132.61 = 11,387.31/x
  3. Step 3: Cross multiply
    18,936.63x = 26,132.61 × 11,387.31
  4. Step 4: Simplify right side
    18,936.63x = 297,580,131.18
  5. Step 5: Solve for x
    x = 297,580,131.18/18,936.63
  6. Step 6: Final answer
    x = 15,714.52

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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.