Home / 13,145.28-19,719.36-4,380.96

Finding the Fourth Proportional to 13,145.28, 19,719.36 and 4,380.96

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Solution

The fourth proportional to 13,145.28, 19,719.36 and 4,380.96 is: 6,571.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.28 : 19,719.36 = 4,380.96 : x
  2. Step 2: Convert to fraction form
    13,145.28/19,719.36 = 4,380.96/x
  3. Step 3: Cross multiply
    13,145.28x = 19,719.36 × 4,380.96
  4. Step 4: Simplify right side
    13,145.28x = 86,389,727.39
  5. Step 5: Solve for x
    x = 86,389,727.39/13,145.28
  6. Step 6: Final answer
    x = 6,571.92

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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.