Home / 28,454.82-42,678.48-8,731.73

Finding the Fourth Proportional to 28,454.82, 42,678.48 and 8,731.73

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Solution

The fourth proportional to 28,454.82, 42,678.48 and 8,731.73 is: 13,096.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,454.82 : 42,678.48 = 8,731.73 : x
  2. Step 2: Convert to fraction form
    28,454.82/42,678.48 = 8,731.73/x
  3. Step 3: Cross multiply
    28,454.82x = 42,678.48 × 8,731.73
  4. Step 4: Simplify right side
    28,454.82x = 372,656,718.03
  5. Step 5: Solve for x
    x = 372,656,718.03/28,454.82
  6. Step 6: Final answer
    x = 13,096.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.