Home / 28,743.18-39,662.84-21,193.59

Finding the Fourth Proportional to 28,743.18, 39,662.84 and 21,193.59

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Solution

The fourth proportional to 28,743.18, 39,662.84 and 21,193.59 is: 29,245.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,743.18 : 39,662.84 = 21,193.59 : x
  2. Step 2: Convert to fraction form
    28,743.18/39,662.84 = 21,193.59/x
  3. Step 3: Cross multiply
    28,743.18x = 39,662.84 × 21,193.59
  4. Step 4: Simplify right side
    28,743.18x = 840,597,832.43
  5. Step 5: Solve for x
    x = 840,597,832.43/28,743.18
  6. Step 6: Final answer
    x = 29,245.12

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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.