Home / 21,397.96-29,530.74-11,969.56

Finding the Fourth Proportional to 21,397.96, 29,530.74 and 11,969.56

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Solution

The fourth proportional to 21,397.96, 29,530.74 and 11,969.56 is: 16,518.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,397.96 : 29,530.74 = 11,969.56 : x
  2. Step 2: Convert to fraction form
    21,397.96/29,530.74 = 11,969.56/x
  3. Step 3: Cross multiply
    21,397.96x = 29,530.74 × 11,969.56
  4. Step 4: Simplify right side
    21,397.96x = 353,469,964.27
  5. Step 5: Solve for x
    x = 353,469,964.27/21,397.96
  6. Step 6: Final answer
    x = 16,518.86

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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.