Home / 20,873.80-28,805.22-11,442.04

Finding the Fourth Proportional to 20,873.80, 28,805.22 and 11,442.04

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Solution

The fourth proportional to 20,873.80, 28,805.22 and 11,442.04 is: 15,789.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.80 : 28,805.22 = 11,442.04 : x
  2. Step 2: Convert to fraction form
    20,873.80/28,805.22 = 11,442.04/x
  3. Step 3: Cross multiply
    20,873.80x = 28,805.22 × 11,442.04
  4. Step 4: Simplify right side
    20,873.80x = 329,590,479.45
  5. Step 5: Solve for x
    x = 329,590,479.45/20,873.80
  6. Step 6: Final answer
    x = 15,789.67

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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.