Home / 20,947.27-28,877.48-16,660.75

Finding the Fourth Proportional to 20,947.27, 28,877.48 and 16,660.75

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Solution

The fourth proportional to 20,947.27, 28,877.48 and 16,660.75 is: 22,968.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.27 : 28,877.48 = 16,660.75 : x
  2. Step 2: Convert to fraction form
    20,947.27/28,877.48 = 16,660.75/x
  3. Step 3: Cross multiply
    20,947.27x = 28,877.48 × 16,660.75
  4. Step 4: Simplify right side
    20,947.27x = 481,120,474.91
  5. Step 5: Solve for x
    x = 481,120,474.91/20,947.27
  6. Step 6: Final answer
    x = 22,968.17

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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.