Home / 28,654.07-39,548.81-21,865.73

Finding the Fourth Proportional to 28,654.07, 39,548.81 and 21,865.73

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Solution

The fourth proportional to 28,654.07, 39,548.81 and 21,865.73 is: 30,179.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,654.07 : 39,548.81 = 21,865.73 : x
  2. Step 2: Convert to fraction form
    28,654.07/39,548.81 = 21,865.73/x
  3. Step 3: Cross multiply
    28,654.07x = 39,548.81 × 21,865.73
  4. Step 4: Simplify right side
    28,654.07x = 864,763,557.67
  5. Step 5: Solve for x
    x = 864,763,557.67/28,654.07
  6. Step 6: Final answer
    x = 30,179.43

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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.