Home / 21,554.76-29,748.06-11,998.20

Finding the Fourth Proportional to 21,554.76, 29,748.06 and 11,998.20

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Solution

The fourth proportional to 21,554.76, 29,748.06 and 11,998.20 is: 16,558.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,554.76 : 29,748.06 = 11,998.20 : x
  2. Step 2: Convert to fraction form
    21,554.76/29,748.06 = 11,998.20/x
  3. Step 3: Cross multiply
    21,554.76x = 29,748.06 × 11,998.20
  4. Step 4: Simplify right side
    21,554.76x = 356,923,173.49
  5. Step 5: Solve for x
    x = 356,923,173.49/21,554.76
  6. Step 6: Final answer
    x = 16,558.90

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Double scale
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Similar ratio
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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.