Home / 28,288.45-42,370.36-18,884.42

Finding the Fourth Proportional to 28,288.45, 42,370.36 and 18,884.42

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Solution

The fourth proportional to 28,288.45, 42,370.36 and 18,884.42 is: 28,285.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.45 : 42,370.36 = 18,884.42 : x
  2. Step 2: Convert to fraction form
    28,288.45/42,370.36 = 18,884.42/x
  3. Step 3: Cross multiply
    28,288.45x = 42,370.36 × 18,884.42
  4. Step 4: Simplify right side
    28,288.45x = 800,139,414.73
  5. Step 5: Solve for x
    x = 800,139,414.73/28,288.45
  6. Step 6: Final answer
    x = 28,285.02

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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.