Home / 20,168.39-27,819.45-13,007.45

Finding the Fourth Proportional to 20,168.39, 27,819.45 and 13,007.45

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Solution

The fourth proportional to 20,168.39, 27,819.45 and 13,007.45 is: 17,941.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.39 : 27,819.45 = 13,007.45 : x
  2. Step 2: Convert to fraction form
    20,168.39/27,819.45 = 13,007.45/x
  3. Step 3: Cross multiply
    20,168.39x = 27,819.45 × 13,007.45
  4. Step 4: Simplify right side
    20,168.39x = 361,860,174.45
  5. Step 5: Solve for x
    x = 361,860,174.45/20,168.39
  6. Step 6: Final answer
    x = 17,941.94

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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.