Home / 13,542.64-20,313.96-7,619.92

Finding the Fourth Proportional to 13,542.64, 20,313.96 and 7,619.92

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Solution

The fourth proportional to 13,542.64, 20,313.96 and 7,619.92 is: 11,429.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,542.64 : 20,313.96 = 7,619.92 : x
  2. Step 2: Convert to fraction form
    13,542.64/20,313.96 = 7,619.92/x
  3. Step 3: Cross multiply
    13,542.64x = 20,313.96 × 7,619.92
  4. Step 4: Simplify right side
    13,542.64x = 154,790,750.08
  5. Step 5: Solve for x
    x = 154,790,750.08/13,542.64
  6. Step 6: Final answer
    x = 11,429.88

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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.