Home / 13,404.28-20,118.54-7,169.56

Finding the Fourth Proportional to 13,404.28, 20,118.54 and 7,169.56

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Solution

The fourth proportional to 13,404.28, 20,118.54 and 7,169.56 is: 10,760.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,404.28 : 20,118.54 = 7,169.56 : x
  2. Step 2: Convert to fraction form
    13,404.28/20,118.54 = 7,169.56/x
  3. Step 3: Cross multiply
    13,404.28x = 20,118.54 × 7,169.56
  4. Step 4: Simplify right side
    13,404.28x = 144,241,079.64
  5. Step 5: Solve for x
    x = 144,241,079.64/13,404.28
  6. Step 6: Final answer
    x = 10,760.82

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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.