Home / 13,611.83-20,415.88-3,749.69

Finding the Fourth Proportional to 13,611.83, 20,415.88 and 3,749.69

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Solution

The fourth proportional to 13,611.83, 20,415.88 and 3,749.69 is: 5,624.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.83 : 20,415.88 = 3,749.69 : x
  2. Step 2: Convert to fraction form
    13,611.83/20,415.88 = 3,749.69/x
  3. Step 3: Cross multiply
    13,611.83x = 20,415.88 × 3,749.69
  4. Step 4: Simplify right side
    13,611.83x = 76,553,221.08
  5. Step 5: Solve for x
    x = 76,553,221.08/13,611.83
  6. Step 6: Final answer
    x = 5,624.02

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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.