Home / 43,621.20-65,415.60-15,530.40

Finding the Fourth Proportional to 43,621.20, 65,415.60 and 15,530.40

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Solution

The fourth proportional to 43,621.20, 65,415.60 and 15,530.40 is: 23,289.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,621.20 : 65,415.60 = 15,530.40 : x
  2. Step 2: Convert to fraction form
    43,621.20/65,415.60 = 15,530.40/x
  3. Step 3: Cross multiply
    43,621.20x = 65,415.60 × 15,530.40
  4. Step 4: Simplify right side
    43,621.20x = 1,015,930,434.24
  5. Step 5: Solve for x
    x = 1,015,930,434.24/43,621.20
  6. Step 6: Final answer
    x = 23,289.83

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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.