Home / 21,965.76-30,311.55-13,014.09

Finding the Fourth Proportional to 21,965.76, 30,311.55 and 13,014.09

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Solution

The fourth proportional to 21,965.76, 30,311.55 and 13,014.09 is: 17,958.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.76 : 30,311.55 = 13,014.09 : x
  2. Step 2: Convert to fraction form
    21,965.76/30,311.55 = 13,014.09/x
  3. Step 3: Cross multiply
    21,965.76x = 30,311.55 × 13,014.09
  4. Step 4: Simplify right side
    21,965.76x = 394,477,239.74
  5. Step 5: Solve for x
    x = 394,477,239.74/21,965.76
  6. Step 6: Final answer
    x = 17,958.73

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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.