Home / 18,786.96-28,184.76-5,639.58

Finding the Fourth Proportional to 18,786.96, 28,184.76 and 5,639.58

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Solution

The fourth proportional to 18,786.96, 28,184.76 and 5,639.58 is: 8,460.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.96 : 28,184.76 = 5,639.58 : x
  2. Step 2: Convert to fraction form
    18,786.96/28,184.76 = 5,639.58/x
  3. Step 3: Cross multiply
    18,786.96x = 28,184.76 × 5,639.58
  4. Step 4: Simplify right side
    18,786.96x = 158,950,208.80
  5. Step 5: Solve for x
    x = 158,950,208.80/18,786.96
  6. Step 6: Final answer
    x = 8,460.67

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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.