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Finding the Fourth Proportional to 28,059.48, 42,089.22 and 8,352.72

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Solution

The fourth proportional to 28,059.48, 42,089.22 and 8,352.72 is: 12,529.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,059.48 : 42,089.22 = 8,352.72 : x
  2. Step 2: Convert to fraction form
    28,059.48/42,089.22 = 8,352.72/x
  3. Step 3: Cross multiply
    28,059.48x = 42,089.22 × 8,352.72
  4. Step 4: Simplify right side
    28,059.48x = 351,559,469.68
  5. Step 5: Solve for x
    x = 351,559,469.68/28,059.48
  6. Step 6: Final answer
    x = 12,529.08

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Double scale
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Similar ratio
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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.