Home / 20,963.31-28,933.47-12,016.80

Finding the Fourth Proportional to 20,963.31, 28,933.47 and 12,016.80

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Solution

The fourth proportional to 20,963.31, 28,933.47 and 12,016.80 is: 16,585.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.31 : 28,933.47 = 12,016.80 : x
  2. Step 2: Convert to fraction form
    20,963.31/28,933.47 = 12,016.80/x
  3. Step 3: Cross multiply
    20,963.31x = 28,933.47 × 12,016.80
  4. Step 4: Simplify right side
    20,963.31x = 347,687,722.30
  5. Step 5: Solve for x
    x = 347,687,722.30/20,963.31
  6. Step 6: Final answer
    x = 16,585.54

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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.