Home / 28,157.10-42,245.04-9,439

Finding the Fourth Proportional to 28,157.10, 42,245.04 and 9,439

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Solution

The fourth proportional to 28,157.10, 42,245.04 and 9,439 is: 14,161.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,157.10 : 42,245.04 = 9,439 : x
  2. Step 2: Convert to fraction form
    28,157.10/42,245.04 = 9,439/x
  3. Step 3: Cross multiply
    28,157.10x = 42,245.04 × 9,439
  4. Step 4: Simplify right side
    28,157.10x = 398,750,932.56
  5. Step 5: Solve for x
    x = 398,750,932.56/28,157.10
  6. Step 6: Final answer
    x = 14,161.65

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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.