Home / 18,778.43-28,178.01-7,692.87

Finding the Fourth Proportional to 18,778.43, 28,178.01 and 7,692.87

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Solution

The fourth proportional to 18,778.43, 28,178.01 and 7,692.87 is: 11,543.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.43 : 28,178.01 = 7,692.87 : x
  2. Step 2: Convert to fraction form
    18,778.43/28,178.01 = 7,692.87/x
  3. Step 3: Cross multiply
    18,778.43x = 28,178.01 × 7,692.87
  4. Step 4: Simplify right side
    18,778.43x = 216,769,873.46
  5. Step 5: Solve for x
    x = 216,769,873.46/18,778.43
  6. Step 6: Final answer
    x = 11,543.56

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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.