Home / 20,146.20-27,802.70-11,193.72

Finding the Fourth Proportional to 20,146.20, 27,802.70 and 11,193.72

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Solution

The fourth proportional to 20,146.20, 27,802.70 and 11,193.72 is: 15,447.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,146.20 : 27,802.70 = 11,193.72 : x
  2. Step 2: Convert to fraction form
    20,146.20/27,802.70 = 11,193.72/x
  3. Step 3: Cross multiply
    20,146.20x = 27,802.70 × 11,193.72
  4. Step 4: Simplify right side
    20,146.20x = 311,215,639.04
  5. Step 5: Solve for x
    x = 311,215,639.04/20,146.20
  6. Step 6: Final answer
    x = 15,447.86

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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.