Home / 28,380.57-42,580.58-10,855.41

Finding the Fourth Proportional to 28,380.57, 42,580.58 and 10,855.41

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Solution

The fourth proportional to 28,380.57, 42,580.58 and 10,855.41 is: 16,286.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,380.57 : 42,580.58 = 10,855.41 : x
  2. Step 2: Convert to fraction form
    28,380.57/42,580.58 = 10,855.41/x
  3. Step 3: Cross multiply
    28,380.57x = 42,580.58 × 10,855.41
  4. Step 4: Simplify right side
    28,380.57x = 462,229,599.66
  5. Step 5: Solve for x
    x = 462,229,599.66/28,380.57
  6. Step 6: Final answer
    x = 16,286.83

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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.