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Finding the Fourth Proportional to 18,215.01, 27,279.98 and 14,021.74

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Solution

The fourth proportional to 18,215.01, 27,279.98 and 14,021.74 is: 20,999.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.01 : 27,279.98 = 14,021.74 : x
  2. Step 2: Convert to fraction form
    18,215.01/27,279.98 = 14,021.74/x
  3. Step 3: Cross multiply
    18,215.01x = 27,279.98 × 14,021.74
  4. Step 4: Simplify right side
    18,215.01x = 382,512,786.77
  5. Step 5: Solve for x
    x = 382,512,786.77/18,215.01
  6. Step 6: Final answer
    x = 20,999.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.