Home / 20,260.87-27,958.67-12,706.88

Finding the Fourth Proportional to 20,260.87, 27,958.67 and 12,706.88

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Solution

The fourth proportional to 20,260.87, 27,958.67 and 12,706.88 is: 17,534.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.87 : 27,958.67 = 12,706.88 : x
  2. Step 2: Convert to fraction form
    20,260.87/27,958.67 = 12,706.88/x
  3. Step 3: Cross multiply
    20,260.87x = 27,958.67 × 12,706.88
  4. Step 4: Simplify right side
    20,260.87x = 355,267,308.97
  5. Step 5: Solve for x
    x = 355,267,308.97/20,260.87
  6. Step 6: Final answer
    x = 17,534.65

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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.