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Finding the Fourth Proportional to 18,812.97, 28,219.50 and 4,773

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Solution

The fourth proportional to 18,812.97, 28,219.50 and 4,773 is: 7,159.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,812.97 : 28,219.50 = 4,773 : x
  2. Step 2: Convert to fraction form
    18,812.97/28,219.50 = 4,773/x
  3. Step 3: Cross multiply
    18,812.97x = 28,219.50 × 4,773
  4. Step 4: Simplify right side
    18,812.97x = 134,691,673.50
  5. Step 5: Solve for x
    x = 134,691,673.50/18,812.97
  6. Step 6: Final answer
    x = 7,159.51

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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.