Home / 20,032.20-30,113.10-18,865.80

Finding the Fourth Proportional to 20,032.20, 30,113.10 and 18,865.80

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Solution

The fourth proportional to 20,032.20, 30,113.10 and 18,865.80 is: 28,359.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,032.20 : 30,113.10 = 18,865.80 : x
  2. Step 2: Convert to fraction form
    20,032.20/30,113.10 = 18,865.80/x
  3. Step 3: Cross multiply
    20,032.20x = 30,113.10 × 18,865.80
  4. Step 4: Simplify right side
    20,032.20x = 568,107,721.98
  5. Step 5: Solve for x
    x = 568,107,721.98/20,032.20
  6. Step 6: Final answer
    x = 28,359.73

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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.