Home / 19,912.11-29,856.70-11,914.84

Finding the Fourth Proportional to 19,912.11, 29,856.70 and 11,914.84

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Solution

The fourth proportional to 19,912.11, 29,856.70 and 11,914.84 is: 17,865.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,912.11 : 29,856.70 = 11,914.84 : x
  2. Step 2: Convert to fraction form
    19,912.11/29,856.70 = 11,914.84/x
  3. Step 3: Cross multiply
    19,912.11x = 29,856.70 × 11,914.84
  4. Step 4: Simplify right side
    19,912.11x = 355,737,803.43
  5. Step 5: Solve for x
    x = 355,737,803.43/19,912.11
  6. Step 6: Final answer
    x = 17,865.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.