Home / 28,173.92-38,801.57-21,776.94

Finding the Fourth Proportional to 28,173.92, 38,801.57 and 21,776.94

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Solution

The fourth proportional to 28,173.92, 38,801.57 and 21,776.94 is: 29,991.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,173.92 : 38,801.57 = 21,776.94 : x
  2. Step 2: Convert to fraction form
    28,173.92/38,801.57 = 21,776.94/x
  3. Step 3: Cross multiply
    28,173.92x = 38,801.57 × 21,776.94
  4. Step 4: Simplify right side
    28,173.92x = 844,979,352.91
  5. Step 5: Solve for x
    x = 844,979,352.91/28,173.92
  6. Step 6: Final answer
    x = 29,991.55

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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.