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Finding the Fourth Proportional to 14,652.21, 21,978.29 and 3,558.90

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Solution

The fourth proportional to 14,652.21, 21,978.29 and 3,558.90 is: 5,338.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,652.21 : 21,978.29 = 3,558.90 : x
  2. Step 2: Convert to fraction form
    14,652.21/21,978.29 = 3,558.90/x
  3. Step 3: Cross multiply
    14,652.21x = 21,978.29 × 3,558.90
  4. Step 4: Simplify right side
    14,652.21x = 78,218,518.49
  5. Step 5: Solve for x
    x = 78,218,518.49/14,652.21
  6. Step 6: Final answer
    x = 5,338.34

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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.