Home / 12,853.81-19,276.58-4,086.67

Finding the Fourth Proportional to 12,853.81, 19,276.58 and 4,086.67

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Solution

The fourth proportional to 12,853.81, 19,276.58 and 4,086.67 is: 6,128.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,853.81 : 19,276.58 = 4,086.67 : x
  2. Step 2: Convert to fraction form
    12,853.81/19,276.58 = 4,086.67/x
  3. Step 3: Cross multiply
    12,853.81x = 19,276.58 × 4,086.67
  4. Step 4: Simplify right side
    12,853.81x = 78,777,019.36
  5. Step 5: Solve for x
    x = 78,777,019.36/12,853.81
  6. Step 6: Final answer
    x = 6,128.69

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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.