Home / 20,159.75-27,819.18-11,207.09

Finding the Fourth Proportional to 20,159.75, 27,819.18 and 11,207.09

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Solution

The fourth proportional to 20,159.75, 27,819.18 and 11,207.09 is: 15,465.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.75 : 27,819.18 = 11,207.09 : x
  2. Step 2: Convert to fraction form
    20,159.75/27,819.18 = 11,207.09/x
  3. Step 3: Cross multiply
    20,159.75x = 27,819.18 × 11,207.09
  4. Step 4: Simplify right side
    20,159.75x = 311,771,914.89
  5. Step 5: Solve for x
    x = 311,771,914.89/20,159.75
  6. Step 6: Final answer
    x = 15,465.07

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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.