Home / 20,437.30-30,659.60-5,645.89

Finding the Fourth Proportional to 20,437.30, 30,659.60 and 5,645.89

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Solution

The fourth proportional to 20,437.30, 30,659.60 and 5,645.89 is: 8,469.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.30 : 30,659.60 = 5,645.89 : x
  2. Step 2: Convert to fraction form
    20,437.30/30,659.60 = 5,645.89/x
  3. Step 3: Cross multiply
    20,437.30x = 30,659.60 × 5,645.89
  4. Step 4: Simplify right side
    20,437.30x = 173,100,729.04
  5. Step 5: Solve for x
    x = 173,100,729.04/20,437.30
  6. Step 6: Final answer
    x = 8,469.84

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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.