Home / 21,738.24-29,999.90-12,177.57

Finding the Fourth Proportional to 21,738.24, 29,999.90 and 12,177.57

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Solution

The fourth proportional to 21,738.24, 29,999.90 and 12,177.57 is: 16,805.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,738.24 : 29,999.90 = 12,177.57 : x
  2. Step 2: Convert to fraction form
    21,738.24/29,999.90 = 12,177.57/x
  3. Step 3: Cross multiply
    21,738.24x = 29,999.90 × 12,177.57
  4. Step 4: Simplify right side
    21,738.24x = 365,325,882.24
  5. Step 5: Solve for x
    x = 365,325,882.24/21,738.24
  6. Step 6: Final answer
    x = 16,805.68

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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.