Home / 19,237.20-28,855.80-8,151.90

Finding the Fourth Proportional to 19,237.20, 28,855.80 and 8,151.90

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Solution

The fourth proportional to 19,237.20, 28,855.80 and 8,151.90 is: 12,227.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,237.20 : 28,855.80 = 8,151.90 : x
  2. Step 2: Convert to fraction form
    19,237.20/28,855.80 = 8,151.90/x
  3. Step 3: Cross multiply
    19,237.20x = 28,855.80 × 8,151.90
  4. Step 4: Simplify right side
    19,237.20x = 235,229,596.02
  5. Step 5: Solve for x
    x = 235,229,596.02/19,237.20
  6. Step 6: Final answer
    x = 12,227.85

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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.