Home / 12,731.76-19,086.12-4,521.84

Finding the Fourth Proportional to 12,731.76, 19,086.12 and 4,521.84

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Solution

The fourth proportional to 12,731.76, 19,086.12 and 4,521.84 is: 6,778.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.76 : 19,086.12 = 4,521.84 : x
  2. Step 2: Convert to fraction form
    12,731.76/19,086.12 = 4,521.84/x
  3. Step 3: Cross multiply
    12,731.76x = 19,086.12 × 4,521.84
  4. Step 4: Simplify right side
    12,731.76x = 86,304,380.86
  5. Step 5: Solve for x
    x = 86,304,380.86/12,731.76
  6. Step 6: Final answer
    x = 6,778.67

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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.