Home / 13,170.32-19,759.20-4,405.76

Finding the Fourth Proportional to 13,170.32, 19,759.20 and 4,405.76

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Solution

The fourth proportional to 13,170.32, 19,759.20 and 4,405.76 is: 6,609.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.32 : 19,759.20 = 4,405.76 : x
  2. Step 2: Convert to fraction form
    13,170.32/19,759.20 = 4,405.76/x
  3. Step 3: Cross multiply
    13,170.32x = 19,759.20 × 4,405.76
  4. Step 4: Simplify right side
    13,170.32x = 87,054,292.99
  5. Step 5: Solve for x
    x = 87,054,292.99/13,170.32
  6. Step 6: Final answer
    x = 6,609.88

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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.