Home / 28,326-42,654.27-20,982.54

Finding the Fourth Proportional to 28,326, 42,654.27 and 20,982.54

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Solution

The fourth proportional to 28,326, 42,654.27 and 20,982.54 is: 31,596.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,326 : 42,654.27 = 20,982.54 : x
  2. Step 2: Convert to fraction form
    28,326/42,654.27 = 20,982.54/x
  3. Step 3: Cross multiply
    28,326x = 42,654.27 × 20,982.54
  4. Step 4: Simplify right side
    28,326x = 894,994,926.45
  5. Step 5: Solve for x
    x = 894,994,926.45/28,326
  6. Step 6: Final answer
    x = 31,596.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.