Home / 20,086.21-27,718.90-11,133.63

Finding the Fourth Proportional to 20,086.21, 27,718.90 and 11,133.63

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Solution

The fourth proportional to 20,086.21, 27,718.90 and 11,133.63 is: 15,364.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.21 : 27,718.90 = 11,133.63 : x
  2. Step 2: Convert to fraction form
    20,086.21/27,718.90 = 11,133.63/x
  3. Step 3: Cross multiply
    20,086.21x = 27,718.90 × 11,133.63
  4. Step 4: Simplify right side
    20,086.21x = 308,611,976.61
  5. Step 5: Solve for x
    x = 308,611,976.61/20,086.21
  6. Step 6: Final answer
    x = 15,364.37

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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.