Home / 18,788.50-28,184.63-6,945.39

Finding the Fourth Proportional to 18,788.50, 28,184.63 and 6,945.39

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Solution

The fourth proportional to 18,788.50, 28,184.63 and 6,945.39 is: 10,418.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.50 : 28,184.63 = 6,945.39 : x
  2. Step 2: Convert to fraction form
    18,788.50/28,184.63 = 6,945.39/x
  3. Step 3: Cross multiply
    18,788.50x = 28,184.63 × 6,945.39
  4. Step 4: Simplify right side
    18,788.50x = 195,753,247.36
  5. Step 5: Solve for x
    x = 195,753,247.36/18,788.50
  6. Step 6: Final answer
    x = 10,418.78

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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.