Home / 20,977.75-28,949.88-11,546.92

Finding the Fourth Proportional to 20,977.75, 28,949.88 and 11,546.92

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Solution

The fourth proportional to 20,977.75, 28,949.88 and 11,546.92 is: 15,935.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.75 : 28,949.88 = 11,546.92 : x
  2. Step 2: Convert to fraction form
    20,977.75/28,949.88 = 11,546.92/x
  3. Step 3: Cross multiply
    20,977.75x = 28,949.88 × 11,546.92
  4. Step 4: Simplify right side
    20,977.75x = 334,281,948.37
  5. Step 5: Solve for x
    x = 334,281,948.37/20,977.75
  6. Step 6: Final answer
    x = 15,935.07

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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.