Home / 28,171.33-42,261.12-8,451.43

Finding the Fourth Proportional to 28,171.33, 42,261.12 and 8,451.43

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Solution

The fourth proportional to 28,171.33, 42,261.12 and 8,451.43 is: 12,678.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,171.33 : 42,261.12 = 8,451.43 : x
  2. Step 2: Convert to fraction form
    28,171.33/42,261.12 = 8,451.43/x
  3. Step 3: Cross multiply
    28,171.33x = 42,261.12 × 8,451.43
  4. Step 4: Simplify right side
    28,171.33x = 357,166,708.55
  5. Step 5: Solve for x
    x = 357,166,708.55/28,171.33
  6. Step 6: Final answer
    x = 12,678.38

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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.