Home / 20,156.40-27,811.62-11,772.92

Finding the Fourth Proportional to 20,156.40, 27,811.62 and 11,772.92

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Solution

The fourth proportional to 20,156.40, 27,811.62 and 11,772.92 is: 16,244.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.40 : 27,811.62 = 11,772.92 : x
  2. Step 2: Convert to fraction form
    20,156.40/27,811.62 = 11,772.92/x
  3. Step 3: Cross multiply
    20,156.40x = 27,811.62 × 11,772.92
  4. Step 4: Simplify right side
    20,156.40x = 327,423,977.33
  5. Step 5: Solve for x
    x = 327,423,977.33/20,156.40
  6. Step 6: Final answer
    x = 16,244.17

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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.