Home / 20,276.92-27,977.36-12,318.67

Finding the Fourth Proportional to 20,276.92, 27,977.36 and 12,318.67

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Solution

The fourth proportional to 20,276.92, 27,977.36 and 12,318.67 is: 16,996.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.92 : 27,977.36 = 12,318.67 : x
  2. Step 2: Convert to fraction form
    20,276.92/27,977.36 = 12,318.67/x
  3. Step 3: Cross multiply
    20,276.92x = 27,977.36 × 12,318.67
  4. Step 4: Simplify right side
    20,276.92x = 344,643,865.31
  5. Step 5: Solve for x
    x = 344,643,865.31/20,276.92
  6. Step 6: Final answer
    x = 16,996.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.