Home / 19,245.05-28,870.59-8,151.80

Finding the Fourth Proportional to 19,245.05, 28,870.59 and 8,151.80

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Solution

The fourth proportional to 19,245.05, 28,870.59 and 8,151.80 is: 12,228.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,245.05 : 28,870.59 = 8,151.80 : x
  2. Step 2: Convert to fraction form
    19,245.05/28,870.59 = 8,151.80/x
  3. Step 3: Cross multiply
    19,245.05x = 28,870.59 × 8,151.80
  4. Step 4: Simplify right side
    19,245.05x = 235,347,131.21
  5. Step 5: Solve for x
    x = 235,347,131.21/19,245.05
  6. Step 6: Final answer
    x = 12,228.97

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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.