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Finding the Fourth Proportional to 18,802.56, 28,200.96 and 4,952.64

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Solution

The fourth proportional to 18,802.56, 28,200.96 and 4,952.64 is: 7,428.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.56 : 28,200.96 = 4,952.64 : x
  2. Step 2: Convert to fraction form
    18,802.56/28,200.96 = 4,952.64/x
  3. Step 3: Cross multiply
    18,802.56x = 28,200.96 × 4,952.64
  4. Step 4: Simplify right side
    18,802.56x = 139,669,202.53
  5. Step 5: Solve for x
    x = 139,669,202.53/18,802.56
  6. Step 6: Final answer
    x = 7,428.20

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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.