Home / 13,551.56-20,327.50-4,780.32

Finding the Fourth Proportional to 13,551.56, 20,327.50 and 4,780.32

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Solution

The fourth proportional to 13,551.56, 20,327.50 and 4,780.32 is: 7,170.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.56 : 20,327.50 = 4,780.32 : x
  2. Step 2: Convert to fraction form
    13,551.56/20,327.50 = 4,780.32/x
  3. Step 3: Cross multiply
    13,551.56x = 20,327.50 × 4,780.32
  4. Step 4: Simplify right side
    13,551.56x = 97,171,954.80
  5. Step 5: Solve for x
    x = 97,171,954.80/13,551.56
  6. Step 6: Final answer
    x = 7,170.54

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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.