Home / 18,675.56-28,012.77-7,581.98

Finding the Fourth Proportional to 18,675.56, 28,012.77 and 7,581.98

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Solution

The fourth proportional to 18,675.56, 28,012.77 and 7,581.98 is: 11,372.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.56 : 28,012.77 = 7,581.98 : x
  2. Step 2: Convert to fraction form
    18,675.56/28,012.77 = 7,581.98/x
  3. Step 3: Cross multiply
    18,675.56x = 28,012.77 × 7,581.98
  4. Step 4: Simplify right side
    18,675.56x = 212,392,261.88
  5. Step 5: Solve for x
    x = 212,392,261.88/18,675.56
  6. Step 6: Final answer
    x = 11,372.74

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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.