Home / 13,926.70-20,903.32-8,645.73

Finding the Fourth Proportional to 13,926.70, 20,903.32 and 8,645.73

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Solution

The fourth proportional to 13,926.70, 20,903.32 and 8,645.73 is: 12,976.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,926.70 : 20,903.32 = 8,645.73 : x
  2. Step 2: Convert to fraction form
    13,926.70/20,903.32 = 8,645.73/x
  3. Step 3: Cross multiply
    13,926.70x = 20,903.32 × 8,645.73
  4. Step 4: Simplify right side
    13,926.70x = 180,724,513.08
  5. Step 5: Solve for x
    x = 180,724,513.08/13,926.70
  6. Step 6: Final answer
    x = 12,976.83

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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.