Home / 20,934.39-28,889.23-11,502.75

Finding the Fourth Proportional to 20,934.39, 28,889.23 and 11,502.75

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Solution

The fourth proportional to 20,934.39, 28,889.23 and 11,502.75 is: 15,873.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.39 : 28,889.23 = 11,502.75 : x
  2. Step 2: Convert to fraction form
    20,934.39/28,889.23 = 11,502.75/x
  3. Step 3: Cross multiply
    20,934.39x = 28,889.23 × 11,502.75
  4. Step 4: Simplify right side
    20,934.39x = 332,305,590.38
  5. Step 5: Solve for x
    x = 332,305,590.38/20,934.39
  6. Step 6: Final answer
    x = 15,873.67

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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.