Home / 28,657.05-42,977.25-12,016.62

Finding the Fourth Proportional to 28,657.05, 42,977.25 and 12,016.62

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Solution

The fourth proportional to 28,657.05, 42,977.25 and 12,016.62 is: 18,021.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,657.05 : 42,977.25 = 12,016.62 : x
  2. Step 2: Convert to fraction form
    28,657.05/42,977.25 = 12,016.62/x
  3. Step 3: Cross multiply
    28,657.05x = 42,977.25 × 12,016.62
  4. Step 4: Simplify right side
    28,657.05x = 516,441,281.90
  5. Step 5: Solve for x
    x = 516,441,281.90/28,657.05
  6. Step 6: Final answer
    x = 18,021.44

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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.