Home / 13,589.21-18,753.91-7,620.41

Finding the Fourth Proportional to 13,589.21, 18,753.91 and 7,620.41

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Solution

The fourth proportional to 13,589.21, 18,753.91 and 7,620.41 is: 10,516.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,589.21 : 18,753.91 = 7,620.41 : x
  2. Step 2: Convert to fraction form
    13,589.21/18,753.91 = 7,620.41/x
  3. Step 3: Cross multiply
    13,589.21x = 18,753.91 × 7,620.41
  4. Step 4: Simplify right side
    13,589.21x = 142,912,511.14
  5. Step 5: Solve for x
    x = 142,912,511.14/13,589.21
  6. Step 6: Final answer
    x = 10,516.61

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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.