Home / 18,678.24-28,015.20-5,529.60

Finding the Fourth Proportional to 18,678.24, 28,015.20 and 5,529.60

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Solution

The fourth proportional to 18,678.24, 28,015.20 and 5,529.60 is: 8,293.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678.24 : 28,015.20 = 5,529.60 : x
  2. Step 2: Convert to fraction form
    18,678.24/28,015.20 = 5,529.60/x
  3. Step 3: Cross multiply
    18,678.24x = 28,015.20 × 5,529.60
  4. Step 4: Simplify right side
    18,678.24x = 154,912,849.92
  5. Step 5: Solve for x
    x = 154,912,849.92/18,678.24
  6. Step 6: Final answer
    x = 8,293.76

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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.