Home / 20,159.57-27,821.14-11,207.99

Finding the Fourth Proportional to 20,159.57, 27,821.14 and 11,207.99

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Solution

The fourth proportional to 20,159.57, 27,821.14 and 11,207.99 is: 15,467.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.57 : 27,821.14 = 11,207.99 : x
  2. Step 2: Convert to fraction form
    20,159.57/27,821.14 = 11,207.99/x
  3. Step 3: Cross multiply
    20,159.57x = 27,821.14 × 11,207.99
  4. Step 4: Simplify right side
    20,159.57x = 311,819,100.44
  5. Step 5: Solve for x
    x = 311,819,100.44/20,159.57
  6. Step 6: Final answer
    x = 15,467.55

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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.