Home / 28,615.92-42,934.20-12,819.60

Finding the Fourth Proportional to 28,615.92, 42,934.20 and 12,819.60

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Solution

The fourth proportional to 28,615.92, 42,934.20 and 12,819.60 is: 19,234.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,615.92 : 42,934.20 = 12,819.60 : x
  2. Step 2: Convert to fraction form
    28,615.92/42,934.20 = 12,819.60/x
  3. Step 3: Cross multiply
    28,615.92x = 42,934.20 × 12,819.60
  4. Step 4: Simplify right side
    28,615.92x = 550,399,270.32
  5. Step 5: Solve for x
    x = 550,399,270.32/28,615.92
  6. Step 6: Final answer
    x = 19,234.02

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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.