Home / 13,899.20-19,180.92-7,611.56

Finding the Fourth Proportional to 13,899.20, 19,180.92 and 7,611.56

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Solution

The fourth proportional to 13,899.20, 19,180.92 and 7,611.56 is: 10,503.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,899.20 : 19,180.92 = 7,611.56 : x
  2. Step 2: Convert to fraction form
    13,899.20/19,180.92 = 7,611.56/x
  3. Step 3: Cross multiply
    13,899.20x = 19,180.92 × 7,611.56
  4. Step 4: Simplify right side
    13,899.20x = 145,996,723.44
  5. Step 5: Solve for x
    x = 145,996,723.44/13,899.20
  6. Step 6: Final answer
    x = 10,503.97

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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.