Home / 19,178.12-28,757.46-8,780.96

Finding the Fourth Proportional to 19,178.12, 28,757.46 and 8,780.96

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Solution

The fourth proportional to 19,178.12, 28,757.46 and 8,780.96 is: 13,166.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,178.12 : 28,757.46 = 8,780.96 : x
  2. Step 2: Convert to fraction form
    19,178.12/28,757.46 = 8,780.96/x
  3. Step 3: Cross multiply
    19,178.12x = 28,757.46 × 8,780.96
  4. Step 4: Simplify right side
    19,178.12x = 252,518,105.96
  5. Step 5: Solve for x
    x = 252,518,105.96/19,178.12
  6. Step 6: Final answer
    x = 13,166.99

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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.