Home / 28,650.20-42,945.73-12,019.88

Finding the Fourth Proportional to 28,650.20, 42,945.73 and 12,019.88

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Solution

The fourth proportional to 28,650.20, 42,945.73 and 12,019.88 is: 18,017.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,650.20 : 42,945.73 = 12,019.88 : x
  2. Step 2: Convert to fraction form
    28,650.20/42,945.73 = 12,019.88/x
  3. Step 3: Cross multiply
    28,650.20x = 42,945.73 × 12,019.88
  4. Step 4: Simplify right side
    28,650.20x = 516,202,598.43
  5. Step 5: Solve for x
    x = 516,202,598.43/28,650.20
  6. Step 6: Final answer
    x = 18,017.42

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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.