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Finding the Fourth Proportional to 28,245.52, 42,358.98 and 9,520.50

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Solution

The fourth proportional to 28,245.52, 42,358.98 and 9,520.50 is: 14,277.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245.52 : 42,358.98 = 9,520.50 : x
  2. Step 2: Convert to fraction form
    28,245.52/42,358.98 = 9,520.50/x
  3. Step 3: Cross multiply
    28,245.52x = 42,358.98 × 9,520.50
  4. Step 4: Simplify right side
    28,245.52x = 403,278,669.09
  5. Step 5: Solve for x
    x = 403,278,669.09/28,245.52
  6. Step 6: Final answer
    x = 14,277.62

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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.