Home / 28,217.20-42,336.60-12,623.62

Finding the Fourth Proportional to 28,217.20, 42,336.60 and 12,623.62

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Solution

The fourth proportional to 28,217.20, 42,336.60 and 12,623.62 is: 18,940.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,217.20 : 42,336.60 = 12,623.62 : x
  2. Step 2: Convert to fraction form
    28,217.20/42,336.60 = 12,623.62/x
  3. Step 3: Cross multiply
    28,217.20x = 42,336.60 × 12,623.62
  4. Step 4: Simplify right side
    28,217.20x = 534,441,150.49
  5. Step 5: Solve for x
    x = 534,441,150.49/28,217.20
  6. Step 6: Final answer
    x = 18,940.26

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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.