Home / 28,000.82-42,007.61-8,278.64

Finding the Fourth Proportional to 28,000.82, 42,007.61 and 8,278.64

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Solution

The fourth proportional to 28,000.82, 42,007.61 and 8,278.64 is: 12,419.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.82 : 42,007.61 = 8,278.64 : x
  2. Step 2: Convert to fraction form
    28,000.82/42,007.61 = 8,278.64/x
  3. Step 3: Cross multiply
    28,000.82x = 42,007.61 × 8,278.64
  4. Step 4: Simplify right side
    28,000.82x = 347,765,848.64
  5. Step 5: Solve for x
    x = 347,765,848.64/28,000.82
  6. Step 6: Final answer
    x = 12,419.84

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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.