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Finding the Fourth Proportional to 28,693.62, 43,037 and 7,635.21

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Solution

The fourth proportional to 28,693.62, 43,037 and 7,635.21 is: 11,451.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,693.62 : 43,037 = 7,635.21 : x
  2. Step 2: Convert to fraction form
    28,693.62/43,037 = 7,635.21/x
  3. Step 3: Cross multiply
    28,693.62x = 43,037 × 7,635.21
  4. Step 4: Simplify right side
    28,693.62x = 328,596,532.77
  5. Step 5: Solve for x
    x = 328,596,532.77/28,693.62
  6. Step 6: Final answer
    x = 11,451.90

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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.