Home / 18,675.31-28,012.39-7,581.73

Finding the Fourth Proportional to 18,675.31, 28,012.39 and 7,581.73

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Solution

The fourth proportional to 18,675.31, 28,012.39 and 7,581.73 is: 11,372.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.31 : 28,012.39 = 7,581.73 : x
  2. Step 2: Convert to fraction form
    18,675.31/28,012.39 = 7,581.73/x
  3. Step 3: Cross multiply
    18,675.31x = 28,012.39 × 7,581.73
  4. Step 4: Simplify right side
    18,675.31x = 212,382,377.63
  5. Step 5: Solve for x
    x = 212,382,377.63/18,675.31
  6. Step 6: Final answer
    x = 11,372.36

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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.