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Finding the Fourth Proportional to 28,857.92, 39,810.92 and 16,916.22

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Solution

The fourth proportional to 28,857.92, 39,810.92 and 16,916.22 is: 23,336.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,857.92 : 39,810.92 = 16,916.22 : x
  2. Step 2: Convert to fraction form
    28,857.92/39,810.92 = 16,916.22/x
  3. Step 3: Cross multiply
    28,857.92x = 39,810.92 × 16,916.22
  4. Step 4: Simplify right side
    28,857.92x = 673,450,132.15
  5. Step 5: Solve for x
    x = 673,450,132.15/28,857.92
  6. Step 6: Final answer
    x = 23,336.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.