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Finding the Fourth Proportional to 28,899.75, 43,349.63 and 8,123.25

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Solution

The fourth proportional to 28,899.75, 43,349.63 and 8,123.25 is: 12,184.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,899.75 : 43,349.63 = 8,123.25 : x
  2. Step 2: Convert to fraction form
    28,899.75/43,349.63 = 8,123.25/x
  3. Step 3: Cross multiply
    28,899.75x = 43,349.63 × 8,123.25
  4. Step 4: Simplify right side
    28,899.75x = 352,139,841.28
  5. Step 5: Solve for x
    x = 352,139,841.28/28,899.75
  6. Step 6: Final answer
    x = 12,184.88

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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.