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Finding the Fourth Proportional to 28,916.34, 43,378.83 and 9,195.54

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Solution

The fourth proportional to 28,916.34, 43,378.83 and 9,195.54 is: 13,794.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,916.34 : 43,378.83 = 9,195.54 : x
  2. Step 2: Convert to fraction form
    28,916.34/43,378.83 = 9,195.54/x
  3. Step 3: Cross multiply
    28,916.34x = 43,378.83 × 9,195.54
  4. Step 4: Simplify right side
    28,916.34x = 398,891,766.42
  5. Step 5: Solve for x
    x = 398,891,766.42/28,916.34
  6. Step 6: Final answer
    x = 13,794.68

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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.