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Finding the Fourth Proportional to 18,679.56, 28,023.57 and 5,532

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Solution

The fourth proportional to 18,679.56, 28,023.57 and 5,532 is: 8,299.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,679.56 : 28,023.57 = 5,532 : x
  2. Step 2: Convert to fraction form
    18,679.56/28,023.57 = 5,532/x
  3. Step 3: Cross multiply
    18,679.56x = 28,023.57 × 5,532
  4. Step 4: Simplify right side
    18,679.56x = 155,026,389.24
  5. Step 5: Solve for x
    x = 155,026,389.24/18,679.56
  6. Step 6: Final answer
    x = 8,299.25

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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.