Home / 21,680.34-29,918.87-11,744.34

Finding the Fourth Proportional to 21,680.34, 29,918.87 and 11,744.34

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Solution

The fourth proportional to 21,680.34, 29,918.87 and 11,744.34 is: 16,207.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680.34 : 29,918.87 = 11,744.34 : x
  2. Step 2: Convert to fraction form
    21,680.34/29,918.87 = 11,744.34/x
  3. Step 3: Cross multiply
    21,680.34x = 29,918.87 × 11,744.34
  4. Step 4: Simplify right side
    21,680.34x = 351,377,381.70
  5. Step 5: Solve for x
    x = 351,377,381.70/21,680.34
  6. Step 6: Final answer
    x = 16,207.19

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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.