Home / 20,421.69-30,634.25-5,630.60

Finding the Fourth Proportional to 20,421.69, 30,634.25 and 5,630.60

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Solution

The fourth proportional to 20,421.69, 30,634.25 and 5,630.60 is: 8,446.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421.69 : 30,634.25 = 5,630.60 : x
  2. Step 2: Convert to fraction form
    20,421.69/30,634.25 = 5,630.60/x
  3. Step 3: Cross multiply
    20,421.69x = 30,634.25 × 5,630.60
  4. Step 4: Simplify right side
    20,421.69x = 172,489,026.73
  5. Step 5: Solve for x
    x = 172,489,026.73/20,421.69
  6. Step 6: Final answer
    x = 8,446.36

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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.