Home / 18,780.85-28,168.44-6,298.75

Finding the Fourth Proportional to 18,780.85, 28,168.44 and 6,298.75

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Solution

The fourth proportional to 18,780.85, 28,168.44 and 6,298.75 is: 9,447.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.85 : 28,168.44 = 6,298.75 : x
  2. Step 2: Convert to fraction form
    18,780.85/28,168.44 = 6,298.75/x
  3. Step 3: Cross multiply
    18,780.85x = 28,168.44 × 6,298.75
  4. Step 4: Simplify right side
    18,780.85x = 177,425,961.45
  5. Step 5: Solve for x
    x = 177,425,961.45/18,780.85
  6. Step 6: Final answer
    x = 9,447.17

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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.