Home / 18,637.62-25,714.80-12,966

Finding the Fourth Proportional to 18,637.62, 25,714.80 and 12,966

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Solution

The fourth proportional to 18,637.62, 25,714.80 and 12,966 is: 17,889.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.62 : 25,714.80 = 12,966 : x
  2. Step 2: Convert to fraction form
    18,637.62/25,714.80 = 12,966/x
  3. Step 3: Cross multiply
    18,637.62x = 25,714.80 × 12,966
  4. Step 4: Simplify right side
    18,637.62x = 333,418,096.80
  5. Step 5: Solve for x
    x = 333,418,096.80/18,637.62
  6. Step 6: Final answer
    x = 17,889.52

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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.