Home / 20,143.30-27,802.20-11,193.88

Finding the Fourth Proportional to 20,143.30, 27,802.20 and 11,193.88

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Solution

The fourth proportional to 20,143.30, 27,802.20 and 11,193.88 is: 15,450.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.30 : 27,802.20 = 11,193.88 : x
  2. Step 2: Convert to fraction form
    20,143.30/27,802.20 = 11,193.88/x
  3. Step 3: Cross multiply
    20,143.30x = 27,802.20 × 11,193.88
  4. Step 4: Simplify right side
    20,143.30x = 311,214,490.54
  5. Step 5: Solve for x
    x = 311,214,490.54/20,143.30
  6. Step 6: Final answer
    x = 15,450.03

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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.