Home / 19,819.90-27,350.64-11,857.42

Finding the Fourth Proportional to 19,819.90, 27,350.64 and 11,857.42

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Solution

The fourth proportional to 19,819.90, 27,350.64 and 11,857.42 is: 16,362.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,819.90 : 27,350.64 = 11,857.42 : x
  2. Step 2: Convert to fraction form
    19,819.90/27,350.64 = 11,857.42/x
  3. Step 3: Cross multiply
    19,819.90x = 27,350.64 × 11,857.42
  4. Step 4: Simplify right side
    19,819.90x = 324,308,025.75
  5. Step 5: Solve for x
    x = 324,308,025.75/19,819.90
  6. Step 6: Final answer
    x = 16,362.75

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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.