Home / 18,674.72-28,011.80-7,581.36

Finding the Fourth Proportional to 18,674.72, 28,011.80 and 7,581.36

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Solution

The fourth proportional to 18,674.72, 28,011.80 and 7,581.36 is: 11,371.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,674.72 : 28,011.80 = 7,581.36 : x
  2. Step 2: Convert to fraction form
    18,674.72/28,011.80 = 7,581.36/x
  3. Step 3: Cross multiply
    18,674.72x = 28,011.80 × 7,581.36
  4. Step 4: Simplify right side
    18,674.72x = 212,367,540.05
  5. Step 5: Solve for x
    x = 212,367,540.05/18,674.72
  6. Step 6: Final answer
    x = 11,371.93

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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.