Home / 20,162.60-30,222.30-7,677.80

Finding the Fourth Proportional to 20,162.60, 30,222.30 and 7,677.80

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Solution

The fourth proportional to 20,162.60, 30,222.30 and 7,677.80 is: 11,508.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,162.60 : 30,222.30 = 7,677.80 : x
  2. Step 2: Convert to fraction form
    20,162.60/30,222.30 = 7,677.80/x
  3. Step 3: Cross multiply
    20,162.60x = 30,222.30 × 7,677.80
  4. Step 4: Simplify right side
    20,162.60x = 232,040,774.94
  5. Step 5: Solve for x
    x = 232,040,774.94/20,162.60
  6. Step 6: Final answer
    x = 11,508.47

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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.