Home / 18,913.28-28,374.12-5,766.67

Finding the Fourth Proportional to 18,913.28, 28,374.12 and 5,766.67

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Solution

The fourth proportional to 18,913.28, 28,374.12 and 5,766.67 is: 8,651.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.28 : 28,374.12 = 5,766.67 : x
  2. Step 2: Convert to fraction form
    18,913.28/28,374.12 = 5,766.67/x
  3. Step 3: Cross multiply
    18,913.28x = 28,374.12 × 5,766.67
  4. Step 4: Simplify right side
    18,913.28x = 163,624,115.65
  5. Step 5: Solve for x
    x = 163,624,115.65/18,913.28
  6. Step 6: Final answer
    x = 8,651.28

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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.