Home / 20,983.24-28,958.92-15,668.84

Finding the Fourth Proportional to 20,983.24, 28,958.92 and 15,668.84

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Solution

The fourth proportional to 20,983.24, 28,958.92 and 15,668.84 is: 21,624.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.24 : 28,958.92 = 15,668.84 : x
  2. Step 2: Convert to fraction form
    20,983.24/28,958.92 = 15,668.84/x
  3. Step 3: Cross multiply
    20,983.24x = 28,958.92 × 15,668.84
  4. Step 4: Simplify right side
    20,983.24x = 453,752,684.05
  5. Step 5: Solve for x
    x = 453,752,684.05/20,983.24
  6. Step 6: Final answer
    x = 21,624.53

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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.