Home / 21,163.31-31,682.66-15,641.27

Finding the Fourth Proportional to 21,163.31, 31,682.66 and 15,641.27

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Solution

The fourth proportional to 21,163.31, 31,682.66 and 15,641.27 is: 23,415.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.31 : 31,682.66 = 15,641.27 : x
  2. Step 2: Convert to fraction form
    21,163.31/31,682.66 = 15,641.27/x
  3. Step 3: Cross multiply
    21,163.31x = 31,682.66 × 15,641.27
  4. Step 4: Simplify right side
    21,163.31x = 495,557,039.38
  5. Step 5: Solve for x
    x = 495,557,039.38/21,163.31
  6. Step 6: Final answer
    x = 23,415.86

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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.