Home / 21,623.22-29,840.00-12,191.72

Finding the Fourth Proportional to 21,623.22, 29,840.00 and 12,191.72

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Solution

The fourth proportional to 21,623.22, 29,840.00 and 12,191.72 is: 16,824.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,623.22 : 29,840.00 = 12,191.72 : x
  2. Step 2: Convert to fraction form
    21,623.22/29,840.00 = 12,191.72/x
  3. Step 3: Cross multiply
    21,623.22x = 29,840.00 × 12,191.72
  4. Step 4: Simplify right side
    21,623.22x = 363,800,714.64
  5. Step 5: Solve for x
    x = 363,800,714.64/21,623.22
  6. Step 6: Final answer
    x = 16,824.54

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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.