Home / 21,546.11-29,724.49-13,157.75

Finding the Fourth Proportional to 21,546.11, 29,724.49 and 13,157.75

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Solution

The fourth proportional to 21,546.11, 29,724.49 and 13,157.75 is: 18,152.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,546.11 : 29,724.49 = 13,157.75 : x
  2. Step 2: Convert to fraction form
    21,546.11/29,724.49 = 13,157.75/x
  3. Step 3: Cross multiply
    21,546.11x = 29,724.49 × 13,157.75
  4. Step 4: Simplify right side
    21,546.11x = 391,107,408.30
  5. Step 5: Solve for x
    x = 391,107,408.30/21,546.11
  6. Step 6: Final answer
    x = 18,152.11

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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.