Home / 21,469.46-29,620.89-13,921.67

Finding the Fourth Proportional to 21,469.46, 29,620.89 and 13,921.67

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Solution

The fourth proportional to 21,469.46, 29,620.89 and 13,921.67 is: 19,207.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,469.46 : 29,620.89 = 13,921.67 : x
  2. Step 2: Convert to fraction form
    21,469.46/29,620.89 = 13,921.67/x
  3. Step 3: Cross multiply
    21,469.46x = 29,620.89 × 13,921.67
  4. Step 4: Simplify right side
    21,469.46x = 412,372,329.74
  5. Step 5: Solve for x
    x = 412,372,329.74/21,469.46
  6. Step 6: Final answer
    x = 19,207.40

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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.