Home / 20,231.84-27,912.40-11,730.88

Finding the Fourth Proportional to 20,231.84, 27,912.40 and 11,730.88

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Solution

The fourth proportional to 20,231.84, 27,912.40 and 11,730.88 is: 16,184.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.84 : 27,912.40 = 11,730.88 : x
  2. Step 2: Convert to fraction form
    20,231.84/27,912.40 = 11,730.88/x
  3. Step 3: Cross multiply
    20,231.84x = 27,912.40 × 11,730.88
  4. Step 4: Simplify right side
    20,231.84x = 327,437,014.91
  5. Step 5: Solve for x
    x = 327,437,014.91/20,231.84
  6. Step 6: Final answer
    x = 16,184.24

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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.