Home / 18,437.78-27,637.30-10,115.33

Finding the Fourth Proportional to 18,437.78, 27,637.30 and 10,115.33

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Solution

The fourth proportional to 18,437.78, 27,637.30 and 10,115.33 is: 15,162.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,437.78 : 27,637.30 = 10,115.33 : x
  2. Step 2: Convert to fraction form
    18,437.78/27,637.30 = 10,115.33/x
  3. Step 3: Cross multiply
    18,437.78x = 27,637.30 × 10,115.33
  4. Step 4: Simplify right side
    18,437.78x = 279,560,439.73
  5. Step 5: Solve for x
    x = 279,560,439.73/18,437.78
  6. Step 6: Final answer
    x = 15,162.37

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1.5x scale

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.