Home / 18,772.68-25,901.22-11,215.65

Finding the Fourth Proportional to 18,772.68, 25,901.22 and 11,215.65

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Solution

The fourth proportional to 18,772.68, 25,901.22 and 11,215.65 is: 15,474.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.68 : 25,901.22 = 11,215.65 : x
  2. Step 2: Convert to fraction form
    18,772.68/25,901.22 = 11,215.65/x
  3. Step 3: Cross multiply
    18,772.68x = 25,901.22 × 11,215.65
  4. Step 4: Simplify right side
    18,772.68x = 290,499,018.09
  5. Step 5: Solve for x
    x = 290,499,018.09/18,772.68
  6. Step 6: Final answer
    x = 15,474.56

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1.5x scale

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.