Home / 20,924.68-28,874.58-11,491.48

Finding the Fourth Proportional to 20,924.68, 28,874.58 and 11,491.48

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Solution

The fourth proportional to 20,924.68, 28,874.58 and 11,491.48 is: 15,857.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.68 : 28,874.58 = 11,491.48 : x
  2. Step 2: Convert to fraction form
    20,924.68/28,874.58 = 11,491.48/x
  3. Step 3: Cross multiply
    20,924.68x = 28,874.58 × 11,491.48
  4. Step 4: Simplify right side
    20,924.68x = 331,811,658.58
  5. Step 5: Solve for x
    x = 331,811,658.58/20,924.68
  6. Step 6: Final answer
    x = 15,857.43

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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.