Home / 13,439.46-20,150.55-6,415.68

Finding the Fourth Proportional to 13,439.46, 20,150.55 and 6,415.68

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Solution

The fourth proportional to 13,439.46, 20,150.55 and 6,415.68 is: 9,619.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.46 : 20,150.55 = 6,415.68 : x
  2. Step 2: Convert to fraction form
    13,439.46/20,150.55 = 6,415.68/x
  3. Step 3: Cross multiply
    13,439.46x = 20,150.55 × 6,415.68
  4. Step 4: Simplify right side
    13,439.46x = 129,279,480.62
  5. Step 5: Solve for x
    x = 129,279,480.62/13,439.46
  6. Step 6: Final answer
    x = 9,619.40

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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.