Home / 21,227.27-31,816.40-11,871.50

Finding the Fourth Proportional to 21,227.27, 31,816.40 and 11,871.50

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Solution

The fourth proportional to 21,227.27, 31,816.40 and 11,871.50 is: 17,793.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,227.27 : 31,816.40 = 11,871.50 : x
  2. Step 2: Convert to fraction form
    21,227.27/31,816.40 = 11,871.50/x
  3. Step 3: Cross multiply
    21,227.27x = 31,816.40 × 11,871.50
  4. Step 4: Simplify right side
    21,227.27x = 377,708,174.16
  5. Step 5: Solve for x
    x = 377,708,174.16/21,227.27
  6. Step 6: Final answer
    x = 17,793.54

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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.