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Finding the Fourth Proportional to 13,587.62, 20,384.17 and 4,823.21

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Solution

The fourth proportional to 13,587.62, 20,384.17 and 4,823.21 is: 7,235.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,587.62 : 20,384.17 = 4,823.21 : x
  2. Step 2: Convert to fraction form
    13,587.62/20,384.17 = 4,823.21/x
  3. Step 3: Cross multiply
    13,587.62x = 20,384.17 × 4,823.21
  4. Step 4: Simplify right side
    13,587.62x = 98,317,171.49
  5. Step 5: Solve for x
    x = 98,317,171.49/13,587.62
  6. Step 6: Final answer
    x = 7,235.79

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.