Home / 20,922.38-28,873.08-11,491.14

Finding the Fourth Proportional to 20,922.38, 28,873.08 and 11,491.14

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Solution

The fourth proportional to 20,922.38, 28,873.08 and 11,491.14 is: 15,857.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.38 : 28,873.08 = 11,491.14 : x
  2. Step 2: Convert to fraction form
    20,922.38/28,873.08 = 11,491.14/x
  3. Step 3: Cross multiply
    20,922.38x = 28,873.08 × 11,491.14
  4. Step 4: Simplify right side
    20,922.38x = 331,784,604.51
  5. Step 5: Solve for x
    x = 331,784,604.51/20,922.38
  6. Step 6: Final answer
    x = 15,857.88

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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.