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Finding the Fourth Proportional to 21,616.98, 32,412.45 and 8,453.64

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Solution

The fourth proportional to 21,616.98, 32,412.45 and 8,453.64 is: 12,675.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,616.98 : 32,412.45 = 8,453.64 : x
  2. Step 2: Convert to fraction form
    21,616.98/32,412.45 = 8,453.64/x
  3. Step 3: Cross multiply
    21,616.98x = 32,412.45 × 8,453.64
  4. Step 4: Simplify right side
    21,616.98x = 274,003,183.82
  5. Step 5: Solve for x
    x = 274,003,183.82/21,616.98
  6. Step 6: Final answer
    x = 12,675.37

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1.5x scale

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.