Home / 20,215.94-27,898.18-11,141.63

Finding the Fourth Proportional to 20,215.94, 27,898.18 and 11,141.63

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Solution

The fourth proportional to 20,215.94, 27,898.18 and 11,141.63 is: 15,375.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.94 : 27,898.18 = 11,141.63 : x
  2. Step 2: Convert to fraction form
    20,215.94/27,898.18 = 11,141.63/x
  3. Step 3: Cross multiply
    20,215.94x = 27,898.18 × 11,141.63
  4. Step 4: Simplify right side
    20,215.94x = 310,831,118.80
  5. Step 5: Solve for x
    x = 310,831,118.80/20,215.94
  6. Step 6: Final answer
    x = 15,375.55

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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.