Home / 21,163.08-29,171.34-16,679.88

Finding the Fourth Proportional to 21,163.08, 29,171.34 and 16,679.88

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Solution

The fourth proportional to 21,163.08, 29,171.34 and 16,679.88 is: 22,991.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.08 : 29,171.34 = 16,679.88 : x
  2. Step 2: Convert to fraction form
    21,163.08/29,171.34 = 16,679.88/x
  3. Step 3: Cross multiply
    21,163.08x = 29,171.34 × 16,679.88
  4. Step 4: Simplify right side
    21,163.08x = 486,574,450.64
  5. Step 5: Solve for x
    x = 486,574,450.64/21,163.08
  6. Step 6: Final answer
    x = 22,991.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.