Home / 13,729.34-20,600.91-5,415.32

Finding the Fourth Proportional to 13,729.34, 20,600.91 and 5,415.32

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Solution

The fourth proportional to 13,729.34, 20,600.91 and 5,415.32 is: 8,125.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729.34 : 20,600.91 = 5,415.32 : x
  2. Step 2: Convert to fraction form
    13,729.34/20,600.91 = 5,415.32/x
  3. Step 3: Cross multiply
    13,729.34x = 20,600.91 × 5,415.32
  4. Step 4: Simplify right side
    13,729.34x = 111,560,571.44
  5. Step 5: Solve for x
    x = 111,560,571.44/13,729.34
  6. Step 6: Final answer
    x = 8,125.70

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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.