Home / 21,580.56-29,777.60-13,627.04

Finding the Fourth Proportional to 21,580.56, 29,777.60 and 13,627.04

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Solution

The fourth proportional to 21,580.56, 29,777.60 and 13,627.04 is: 18,803.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,580.56 : 29,777.60 = 13,627.04 : x
  2. Step 2: Convert to fraction form
    21,580.56/29,777.60 = 13,627.04/x
  3. Step 3: Cross multiply
    21,580.56x = 29,777.60 × 13,627.04
  4. Step 4: Simplify right side
    21,580.56x = 405,780,546.30
  5. Step 5: Solve for x
    x = 405,780,546.30/21,580.56
  6. Step 6: Final answer
    x = 18,803.06

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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.