Home / 28,309.20-42,456.97-8,313.94

Finding the Fourth Proportional to 28,309.20, 42,456.97 and 8,313.94

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Solution

The fourth proportional to 28,309.20, 42,456.97 and 8,313.94 is: 12,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,309.20 : 42,456.97 = 8,313.94 : x
  2. Step 2: Convert to fraction form
    28,309.20/42,456.97 = 8,313.94/x
  3. Step 3: Cross multiply
    28,309.20x = 42,456.97 × 8,313.94
  4. Step 4: Simplify right side
    28,309.20x = 352,984,701.16
  5. Step 5: Solve for x
    x = 352,984,701.16/28,309.20
  6. Step 6: Final answer
    x = 12,468.90

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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.