Home / 28,861.11-43,283.46-18,315.21

Finding the Fourth Proportional to 28,861.11, 43,283.46 and 18,315.21

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Solution

The fourth proportional to 28,861.11, 43,283.46 and 18,315.21 is: 27,467.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.11 : 43,283.46 = 18,315.21 : x
  2. Step 2: Convert to fraction form
    28,861.11/43,283.46 = 18,315.21/x
  3. Step 3: Cross multiply
    28,861.11x = 43,283.46 × 18,315.21
  4. Step 4: Simplify right side
    28,861.11x = 792,745,890.42
  5. Step 5: Solve for x
    x = 792,745,890.42/28,861.11
  6. Step 6: Final answer
    x = 27,467.62

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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.