Home / 18,815.06-25,939.36-12,089.22

Finding the Fourth Proportional to 18,815.06, 25,939.36 and 12,089.22

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Solution

The fourth proportional to 18,815.06, 25,939.36 and 12,089.22 is: 16,666.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.06 : 25,939.36 = 12,089.22 : x
  2. Step 2: Convert to fraction form
    18,815.06/25,939.36 = 12,089.22/x
  3. Step 3: Cross multiply
    18,815.06x = 25,939.36 × 12,089.22
  4. Step 4: Simplify right side
    18,815.06x = 313,586,629.70
  5. Step 5: Solve for x
    x = 313,586,629.70/18,815.06
  6. Step 6: Final answer
    x = 16,666.79

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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.