Home / 29,725.73-40,990.88-20,769.96

Finding the Fourth Proportional to 29,725.73, 40,990.88 and 20,769.96

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Solution

The fourth proportional to 29,725.73, 40,990.88 and 20,769.96 is: 28,641.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,725.73 : 40,990.88 = 20,769.96 : x
  2. Step 2: Convert to fraction form
    29,725.73/40,990.88 = 20,769.96/x
  3. Step 3: Cross multiply
    29,725.73x = 40,990.88 × 20,769.96
  4. Step 4: Simplify right side
    29,725.73x = 851,378,989.89
  5. Step 5: Solve for x
    x = 851,378,989.89/29,725.73
  6. Step 6: Final answer
    x = 28,641.15

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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.