Home / 20,157.90-27,807.28-11,976.84

Finding the Fourth Proportional to 20,157.90, 27,807.28 and 11,976.84

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Solution

The fourth proportional to 20,157.90, 27,807.28 and 11,976.84 is: 16,521.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157.90 : 27,807.28 = 11,976.84 : x
  2. Step 2: Convert to fraction form
    20,157.90/27,807.28 = 11,976.84/x
  3. Step 3: Cross multiply
    20,157.90x = 27,807.28 × 11,976.84
  4. Step 4: Simplify right side
    20,157.90x = 333,043,144.47
  5. Step 5: Solve for x
    x = 333,043,144.47/20,157.90
  6. Step 6: Final answer
    x = 16,521.72

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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.