Home / 14,391.13-19,861.18-8,422.44

Finding the Fourth Proportional to 14,391.13, 19,861.18 and 8,422.44

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Solution

The fourth proportional to 14,391.13, 19,861.18 and 8,422.44 is: 11,623.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,391.13 : 19,861.18 = 8,422.44 : x
  2. Step 2: Convert to fraction form
    14,391.13/19,861.18 = 8,422.44/x
  3. Step 3: Cross multiply
    14,391.13x = 19,861.18 × 8,422.44
  4. Step 4: Simplify right side
    14,391.13x = 167,279,596.88
  5. Step 5: Solve for x
    x = 167,279,596.88/14,391.13
  6. Step 6: Final answer
    x = 11,623.80

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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.