Home / 13,579.35-20,350.80-9,679.20

Finding the Fourth Proportional to 13,579.35, 20,350.80 and 9,679.20

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Solution

The fourth proportional to 13,579.35, 20,350.80 and 9,679.20 is: 14,505.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.35 : 20,350.80 = 9,679.20 : x
  2. Step 2: Convert to fraction form
    13,579.35/20,350.80 = 9,679.20/x
  3. Step 3: Cross multiply
    13,579.35x = 20,350.80 × 9,679.20
  4. Step 4: Simplify right side
    13,579.35x = 196,979,463.36
  5. Step 5: Solve for x
    x = 196,979,463.36/13,579.35
  6. Step 6: Final answer
    x = 14,505.81

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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.